The Authority Illusion
A connection through “Belief and behaviour”: Explore the distance between what we think shapes our choices and what actually does.
Ultramarathon running has built a culture around grit, discipline, and pushing limits. The psychological research tells a different and more uncomfortable story: that a disproportionate number of ultra-endurance athletes are not running toward something, but away from something.
At mile 70 of a hundred-mile race, something unusual happens to the human brain. The rational mind — the part that manages meetings, mortgages, and the performance review you have been dreading — goes quiet. What remains is something older: pure sensation, pure forward motion, and, for many runners, the first genuine stillness they have felt in years. The question worth asking is not how they got to mile 70. It is what they were running from to get there.
Ultramarathon running — any race beyond the standard 26.2-mile marathon, typically 50K, 50 miles, 100K, or 100 miles — has grown from a fringe pursuit into a mainstream aspiration. UK entries have increased by approximately 1,000 per cent since 2008, from fewer than 500 recorded finishers to well over 30,000 annual participants across events, according to estimates from RunUltra and Athletics Weekly. The sport's self-mythology is powerful: grit, discipline, the conquest of limits. But a growing body of psychological and neurological research suggests the mythology is incomplete, and that the people most drawn to extreme endurance may be those for whom ordinary life — its stillness, its unpredictability, its emotional demands — is the hardest thing of all.
The demographic profile of a UK ultra runner is surprisingly consistent. Events such as the Centurion Running series — which organises the South Downs Way 100, the North Downs Way 100, and several other marquee fixtures — report an average participant age of 38. Across most UK ultra events, including UTMB qualifier races, male entrants account for 70 per cent or more of the field, a figure that stands in sharp contrast to recreational running, which is majority female in the UK. These are not, by and large, people who grew up as athletes. They are professionals in high-pressure careers — lawyers, engineers, consultants, NHS clinicians — who discovered extreme endurance in their thirties.
The question of why this particular population is drawn to this particular sport has begun to attract serious research attention. A 2021 Harvard master's thesis by Jill Ann Colangelo, subsequently developed into a peer-reviewed paper published in Sports (2023), surveyed 523 ultra-endurance athletes and found a greater prevalence of mental disorder in this population than in the general population, with anxiety, depression, and alcohol abuse the most common presentations. Critically, the study found a positive correlation between incidence of mental disorder and training volume per week — the more hours an athlete trained, the more likely they were to carry a diagnosed or undiagnosed mental health condition.
The trauma connection runs deeper than mental health diagnosis alone. Research published in Frontiers in Sports and Active Living (2021) found that ultra-endurance athletes at risk of exercise dependency had significantly higher scores for childhood trauma compared to those not at risk. ACEs — Adverse Childhood Experiences — are a standardised measure of childhood trauma, covering physical, sexual, and emotional abuse, neglect, and household dysfunction including parental substance misuse, mental illness, and domestic violence. A 2014 Public Health England study (Bellis et al.) found that 47 per cent of English adults report at least one ACE. The research on ultra runners suggests this proportion is meaningfully elevated in the endurance population.
Sources: Bellis et al., Public Health England (2014); Frontiers in Sports and Active Living (2021). Ultra athlete figures represent the at-risk subgroup, not the full population.
The addiction overlap is not metaphorical. Rich Roll, one of the most prominent voices in endurance sport, has spoken extensively about replacing alcohol dependency with extreme athletic pursuit — describing the transition not as recovery but as substitution, with the same compulsive architecture underneath. Nikki Kimball, a multiple Western States 100 champion, has been equally direct about using ultra running as a primary tool for managing severe depression, acknowledging that the sport is something she needs rather than something she chooses. Dean Karnazes, whose 2005 memoir Ultramarathon Man helped define the genre's popular image, has discussed running as a response to mental and emotional instability that preceded his athletic career. These are not peripheral figures offering cautionary tales. They are the sport's most celebrated exemplars.
"There is a greater prevalence of mental disorder in the ultra endurance athlete population as a whole, and a positive correlation between incidence of mental disorder and volume of training per week."
— Jill Ann Colangelo, Sports (2023)
Addiction researchers have noted for some years that endurance sport can function as what they call a behavioural substitute for substance use — sharing the same dopaminergic reward pathways, the same escalation pattern, and the same capacity to organise an entire life around the next hit. The difference is that running produces a socially celebrated version of the same neurochemical loop. Nobody stages an intervention when you sign up for your third hundred-miler.
The standard explanation for why people run extreme distances is endorphins — the body's internal opioids, released during sustained exercise, producing the famous runner's high. This explanation is not wrong. It is simply incomplete, and the incompleteness matters enormously when you are trying to understand why trauma survivors are disproportionately drawn to the sport.
A 2015 study by Johannes Fuss and colleagues, published in Proceedings of the National Academy of Sciences (PNAS), demonstrated that the runner's high is primarily driven by the endocannabinoid system — the body's internal cannabis-like signalling network — rather than by endorphins. The endocannabinoid system (ECS) produces compounds called anandamide and 2-AG during sustained moderate exercise; these bind to the same receptors as THC, the active compound in cannabis. A 2021 follow-up study by Siebers et al., published in Psychoneuroendocrinology, confirmed in humans that blocking opioid receptors with naltrexone did not prevent the runner's high — but that endocannabinoid activity remained central to both the euphoria and the anxiolysis (anxiety reduction) produced by running.
The endocannabinoid system does not merely reduce pain — it produces dissociation. Anandamide (from the Sanskrit ananda, meaning bliss) suppresses activity in the prefrontal cortex, the brain region responsible for self-referential thought, rumination, and the processing of past trauma. During sustained ultramarathon effort, ECS activation creates a state neurologically similar to mild dissociation — the same coping mechanism that trauma survivors learn in childhood to manage overwhelming experience. For someone whose nervous system learned early that the present moment is dangerous, this is not a side effect. It is the entire point.
The cortisol mechanism is equally important. People with histories of childhood trauma frequently display dysregulated HPA axes — the hypothalamic-pituitary-adrenal axis, the body's primary stress-response system. A 2022 review by Murphy et al. in Frontiers in Psychiatry confirmed that dysregulated cortisol responses are detectable in adults with childhood trauma histories, with the HPA axis sensitised to produce exaggerated stress responses to ordinary triggers. For these individuals, baseline cortisol is chronically elevated — the nervous system runs permanently hot, interpreting ordinary life as a low-grade emergency.
Intense sustained exercise is one of the few activities that produces what researchers describe as a cortisol flush — a controlled spike followed by a significant drop below baseline. Research on exercise interventions in PTSD populations (Hegberg et al., Frontiers in Psychiatry, 2019) has found that high-intensity aerobic exercise can normalise diurnal cortisol rhythms in trauma survivors. Put plainly: for someone whose nervous system has been running at emergency level since childhood, a six-hour mountain run may be the only time their body chemistry returns to what the rest of the population experiences as normal.
| State | Endorphins | Endocannabinoids | Cortisol | Net Effect |
|---|---|---|---|---|
| Alcohol intoxication | Elevated | Elevated | Initially suppressed | Euphoria, anxiolysis, dissociation |
| Alcohol withdrawal | Depleted | Depleted | Sharply elevated | Anxiety, hypervigilance, craving |
| Sustained ultra effort (hrs 4–8) | Elevated | Elevated | Spiked then flushing | Euphoria, pain suppression, dissociation |
| Recovery (24–48hrs post-ultra) | Returning to baseline | Returning to baseline | Below baseline | Calm, emotional openness, low anxiety |
| Alcohol relief (first drink after craving) | Elevated | Elevated | Suppressed | Relief, calm — mirrors post-ultra recovery |
Neurochemical signatures across states. The recovery period after an ultra mirrors the neurochemical relief of alcohol, not the intoxication. Sources: Fuss et al. (2015); Siebers et al. (2021); Hegberg et al. (2019).
The third mechanism is what researchers call the controlled suffering hypothesis. Unlike the uncontrollable pain that characterises trauma — which arrives without warning, has no finish line, and cannot be stopped — race pain is chosen, bounded, and reversible. You can, at any point, step off the course. The suffering has a structure. For people whose early experience of pain was characterised by helplessness, this reframing is not trivial. It is, in effect, a form of exposure therapy conducted at 60 miles per weekend. The body learns, repetitively, that pain can be entered and exited — that it does not have to mean catastrophe.
"At mile 70 of a hundred-mile race, your brain chemistry looks remarkably similar to the relief an alcoholic feels after their first drink. Ultra running isn't the opposite of addiction. For a lot of people, it's a rebranded version of it."
Scott Jurek's 2012 memoir Eat & Run is ostensibly a book about plant-based nutrition and competitive ultramarathon running. Read more carefully, it is a book about a man who cannot stop moving. Jurek describes his childhood in rural Minnesota — a mother with multiple sclerosis, a father whose emotional unavailability shaped the household — and the way running became the one domain in which he had agency. The miles are not described as pleasure. They are described as necessity. David Goggins' Can't Hurt Me (2018) is more explicit still: a childhood defined by violence and humiliation, and an adult life organised around the systematic infliction of physical suffering as proof that the past cannot define him. Goggins does not present running as therapy. He presents it as war — against his own body, his own history, his own capacity for weakness.
What both accounts share, and what qualitative research on ultra-distance athletes consistently surfaces, is the inability to tolerate stillness. A 2022 study by Watkins, Wilson, and Buscombe in Psychology of Sport and Exercise, applying reversal theory to ultra-running phenomenology, found that the dominant motivational states reported by ultra runners were not the health or social motivators that drive recreational running, but rather states associated with managing internal arousal, proving self-worth, and pursuing experiences of ego dissolution — the temporary dissolution of the self-concept that occurs during extreme physical effort. These are not the motivations of people who want to get fit. They are the motivations of people who want to escape themselves.
The psychological literature distinguishes carefully between exercise as a healthy coping mechanism and exercise as an avoidance strategy. The former processes and integrates difficult experience; the latter substitutes physical sensation for emotional engagement. The distinction matters clinically because exercise-as-avoidance is associated with poorer mental health outcomes over time, higher rates of injury (because athletes override pain signals that would stop a healthy person), and — critically — intensification of the compulsion. What begins as a half-marathon becomes a full marathon, then an ultra, then multi-day events. The escalation pattern mirrors addiction progression precisely: tolerance builds, the dose increases, and the baseline state without the substance (or the miles) becomes increasingly intolerable.
Entry point — often follows a period of stress or life disruption
Frequently follows workplace burnout or relationship breakdown
Often coincides with bereavement, divorce, or health diagnosis
Escalation — recreational running no longer sufficient
Full commitment — training now structures entire life
Tolerance ceiling reached; standard ultras no longer produce the effect
Based on qualitative survey data from ultra running communities and memoir evidence. Life events are the most commonly reported precipitants, not universal predictors.
A 2018 study in Frontiers in Psychology by Schüler et al. found that low competence satisfaction — a persistent sense of not being good enough — predicts anxious self-motivation, which in turn predicts exercise addiction in ultra-endurance athletes. The mechanism is not simply that running feels good. It is that running provides repeated, measurable proof of adequacy that ordinary life fails to deliver. Every finish line is a verdict: you were enough. The problem is that the verdict expires at midnight, and the next race is already on the calendar.
Ultra running is substantially more male than recreational running. At the marathon distance, women make up the majority of UK participants; at 100 miles, they account for roughly 30 per cent. But something interesting happens at the longest distances: the performance gap between men and women narrows dramatically, and at extreme distances — events beyond 195 miles — women's average pace begins to exceed men's. A 2022 analysis published by the University of Alaska Fairbanks found that in races beyond 195 miles, women were on average 0.6 per cent faster than men.
The physiological explanations are well-documented: women have higher proportions of slow-twitch muscle fibres, superior fat oxidation at submaximal intensities, and — relevant to multi-day events — better thermoregulation over extended periods. But the psychological explanation may be more significant. Research on pacing strategies in ultra events consistently finds that men are more likely to overcook the early miles — to run at a pace driven by ego and competitive positioning rather than sustainable effort — and to pay for it catastrophically in the final third. Women's tendency toward conservative, sustainable pacing is not merely a physiological trait. It reflects a different relationship with the ego, with control, and with the willingness to be seen struggling.
Competitive positioning in early miles; pace driven by place in field rather than physiological capacity. Higher DNF (did not finish) rates at 100-mile distances. The sport rewards the willingness to suffer — and men are more likely to interpret early suffering as a signal to push harder rather than pull back.
Sustainable effort from the start; pace calibrated to finish rather than to position. Higher finishing rates at extreme distances. Research suggests women are more likely to treat the race as a negotiation with their own body rather than a competition with others — a distinction that becomes decisive after 80 miles.
The exception cases are illuminating. Ultra running is growing fastest among women in their thirties and forties, and researchers and coaches working in this space have noted a consistent pattern: many of these women entered the sport following specific life transitions — divorce, bereavement, cancer diagnosis, leaving abusive relationships. The sport offers them something that the male-dominated narrative of ultra running tends to obscure: not the conquest of external limits, but the reclamation of a body that has been subject to someone else's control. The hundred-mile finish line is not proof of toughness. It is proof of ownership.
The gender split in trail and ultra running is roughly 60/40 in favour of men across all distances — but the gap narrows progressively with distance, and women are now the primary growth demographic in UK ultra participation.
— Aspire PR / Trail and Ultra Running Report (2024)
Ultra running communities are unusually intense in their bonding. Part of this is explicable through well-established research on shared suffering: military studies on unit cohesion have consistently found that people who endure hardship together form bonds of unusual depth and durability. The mechanism is partly neurochemical — shared stress activates oxytocin release — and partly cognitive: the experience of being witnessed in vulnerability creates a form of intimacy that ordinary social interaction rarely achieves.
Ultra running recreates this dynamic with remarkable fidelity. The specific culture of the sport — the vulnerability of being broken at mile 70, the dependency on strangers at aid stations, the hours of darkness alone with your own thoughts — produces a kind of emotional rawness that many participants describe as inaccessible in ordinary life. Aid station conversations at hour 18 of a 24-hour race are reported, in memoir and documentary testimony, as among the most honest exchanges participants have ever had. People discuss their marriages, their failures, their fears, with strangers they have known for four hours. The physical extremity strips away the social performance that normally governs how adults present themselves to one another.
This is genuinely valuable. But it is worth noting what it is not. It is not therapy. It does not require engagement with the underlying material. The ultra running community does not, as a rule, ask why you are there. It rewards effort without interrogating motivation. Compare this with Alcoholics Anonymous, which also creates intense community bonds through shared vulnerability — but which requires, as a condition of membership, explicit engagement with the underlying problem. The twelve steps are not optional. The miles are.
Intense bonds formed through physical extremity. Emotional openness enabled by exhaustion. Culture rewards completion and effort. Motivation is never questioned — the miles speak for themselves. The underlying problem can remain entirely unaddressed indefinitely.
Intense bonds formed through shared vulnerability. Emotional openness structured by the programme. The twelve steps require explicit engagement with the underlying problem — the cause, not just the symptom. Motivation is the entire subject.
Research on emotional processing during physical extremity suggests that the body's stress response — specifically the activation of the amygdala and the suppression of the prefrontal cortex during sustained high-intensity effort — creates a state in which emotional material that is normally defended against becomes temporarily accessible. This is why runners describe crying unexpectedly at mile 80, or feeling a sudden and overwhelming sense of connection to other people. The defences are down, not because of insight, but because the body has run out of resources to maintain them. Whether this constitutes therapeutic processing or simply temporary exposure is an open question.
Ultra runners have significantly higher rates of overuse injury than recreational runners. A 2021 review in Frontiers in Physiology found injury rates of between 1.9 and 3.4 injuries per athlete in ultra-endurance events, with the majority being overuse injuries — stress fractures, Achilles tendinopathy, iliotibial band syndrome, and chronic fatigue syndrome. Achilles tendinopathy alone affects up to 19 per cent of ultra runners. These are not the injuries of people who push too hard once. They are the injuries of people who override pain signals repeatedly, over years.
The clinical literature on dissociation and pain is instructive here. Dissociation — the psychological mechanism by which the mind detaches from overwhelming physical or emotional experience — is a documented trauma response. Research published in Trauma Psychology News has found that between 17 and 30 per cent of performing artists and athletes exhibit pathological levels of dissociation. In the context of ultra running, this manifests as an unusual tolerance for pain signals that would stop most people. A 2018 study by Roebuck et al. in the Journal of Pain found that ultrarunners display supranormal pain tolerance, and that psychological factors — not physiological ones — were the primary predictors. The body is sending the signal. The mind has learned not to receive it.
| Injury Type | Prevalence in Ultra Runners | Comparison (Recreational Runners) |
|---|---|---|
| Achilles tendinopathy | Up to 19% | ~6–8% |
| Iliotibial band syndrome | ~12% | ~8–10% |
| Stress fractures | ~5–8% | ~1–3% |
| Plantar fasciitis | ~10% | ~5–7% |
| Overall overuse injury (per event) | 1.9–3.4 per athlete | <0.5 per athlete |
Sources: Frontiers in Physiology (2021); Springer Nature Ultra-Marathon Running Injuries review; UESSM Common Ultramarathon Musculoskeletal Injuries.
The relationship toll is harder to quantify but consistently reported. Ultra running at the competitive amateur level requires 15 to 20 hours of training per week — a second full-time job, conducted largely at weekends, in the early morning, and in the evenings when families are together. The training blocks that precede major races produce a form of emotional inaccessibility that partners and children describe in terms that are difficult to distinguish from the language of living with someone in active addiction: the physical presence without the psychological engagement, the irritability when the training is disrupted, the way the sport gradually colonises every conversation and every holiday.
Some sports psychologists now frame this explicitly. The distinction between "running toward" and "running away" has become a working framework in sports psychology practice. Running that processes and integrates experience — that uses the physical practice as a container for emotional work — is qualitatively different from running that substitutes for engagement. The former leaves a person more present; the latter leaves them more absent. The miles look identical from the outside.
"The research suggests that ultra running doesn't build mental toughness — it selects for people who already had to develop it."
What does constructive integration look like? The honest answer is that the research is thin. A handful of sports psychologists have begun working with ultra runners on what they describe as "motivation auditing" — examining not the training plan but the function the training serves. Is the running building something, or preventing something? Is the athlete more emotionally available after a training block, or less? Does the prospect of a rest week produce relief or panic? The answers, in many cases, are diagnostic.
None of this is an argument against ultra running. The sport produces genuine physiological benefits, genuine community, and — for many people — a form of psychological regulation that has kept them functional when other options failed. The controlled suffering hypothesis is real: there is something therapeutically valuable about choosing pain, entering it, and coming out the other side. The endocannabinoid-mediated dissociation is real, and for someone whose nervous system has never known genuine quiet, it may be the closest they have come to peace.
What the research asks us to hold alongside the celebration is a more uncomfortable truth: that the sport selects, with unusual efficiency, for people who learned early that pain is manageable and stillness is dangerous. The 30,000 people who will run a UK ultra this year are not, in the main, people who have conquered their psychology. They are people who have found a socially celebrated method of managing it — one that provides community, neurochemical relief, and a narrative of toughness that the underlying experience does not quite support.
The finish line is real. The medal is real. The 22 hours in between, when the nervous system finally stops screaming and the body chemistry briefly resembles something like normal — that is real too. The question is whether the finish line is the destination, or whether it is simply the point at which the clock resets and the next race goes on the calendar.
"The finish line isn't really the point. The point is the 22 hours in between, when your nervous system finally stops screaming and you feel, briefly, like everything is fine."
You’ve looked beneath the surface.
A connection through “Belief and behaviour”: Explore the distance between what we think shapes our choices and what actually does.
A connection through “Belief and behaviour”: Explore the distance between what we think shapes our choices and what actually does.
A connection through “Belief and behaviour”: Explore the distance between what we think shapes our choices and what actually does.