Running more than a marathon on purpose used to be a fringe act. A few hundred people, a remote trail, no crowd. That is not the sport anymore. The ultra running growth statistics tell one of the clearest growth stories in modern endurance sport, and almost every credible dataset points the same direction: up, steeply, for thirty years straight.

This is a numbers post. No philosophy, no training theory. Just what the public data says about how many people are signing up, how many events exist, and how hard it has become to get into the races everyone wants. Here is the picture, global and specific.

Global Participation Grew 1,676% in 23 Years

The anchor number comes from the largest study ever conducted on the sport, a joint analysis by RunRepeat and the International Association of Ultrarunners (IAU) that examined 5,010,730 race results from 15,451 ultra events.

The headline: ultramarathon participation grew 1,676% over 23 years, from 34,401 yearly participations in 1996 to 611,098 in 2018 (RunRepeat).

The growth was not a slow, distant burn either. In just the decade before that study, participation rose 345%, climbing from 137,234 to 611,098. And people were not doing it once and quitting. The share of runners entering more than one ultra per year jumped from 14% in 1996 to 41%, a sign the sport was building repeat participants, not just curious first-timers.

That last point matters for growth. A sport that keeps its converts compounds.

Trail and Ultra Running Is a Global Phenomenon

Zoom out to the international trail scene and the scale gets larger. The International Trail Running Association (ITRA) reports that trail running has grown at roughly 12% per year for over a decade and now counts more than 20 million participants worldwide (ITRA).

ITRA's own results database holds records from around 1.7 million unique runners across roughly 22,400 to 25,000 races from every corner of the map. One ITRA survey alone drew responses from 104 countries, which tells you this is not a North American or Alpine quirk. It is worldwide.

North American Finishers Grew Nearly 10x Since 2000

Zoom back in to a single, well-tracked region and the trend holds with remarkable consistency. Ultrarunning Magazine's long-running North American finish data shows the sport going from niche to mainstream in a generation.

In 2000, there were 8,402 unique runners logging 14,354 finishes. By 2024, that had exploded to 86,885 unique runners and 124,842 finishes (Ultrarunning Magazine).

That is roughly a 10x increase in participants and nearly a 9x increase in finishes in 24 years. The event supply expanded to match. In 2025, there were nearly 2,000 races carrying at least one ultra distance, adding up to about 3,270 ultramarathon events and roughly 150,000 finishers across the year.

The Sport Is Still Growing Year Over Year

Old growth is one thing. The interesting question is whether the curve has flattened. It has not.

RunSignup's first dedicated ultramarathon report, published in 2026, looked at 728 ultra events across 418 races representing 50,220 participants, an estimated one quarter to one third of all US ultras on a single platform (RunSignup).

Comparing the same races year over year, the average ultramarathon grew 6.5% from 2024 to 2025. Events that ran their registration natively on the platform grew 8.3%. Both outpaced the 5% average across all race distances. Ultras were also spread across the country, with 46 states hosting at least one on that platform alone.

So the growth is broad and it is current, not a memory from the 2010s.

In-Person Demand Now Outstrips Available Spots

The most vivid growth signal is not a participation table. It is the number of people who want in and cannot get a spot.

Take Western States, the oldest 100-mile trail race in the world. A US Forest Service permit has capped its field at 369 starters since 1984. Demand has not respected that ceiling. The 2025 lottery drew just under 10,000 applicants (9,994) for those 369 places. One year later, the 2026 lottery pulled 11,328 applicants, with 93,003 accumulated tickets in the drawing (WSER).

Roughly 30 people now vie for every single starting spot at that one race.

The pattern shows up at the sport's biggest international event too. UTMB, the marquee race circling Mont-Blanc, started in 2003 with 700 runners. Entrants doubled to 1,400 by 2004. In 2005 the 5,000-runner cap filled seven months early. By 2006 it filled in under 24 hours, and for the 2008 edition 6,000 runners registered in eight minutes (Wikipedia). Today the HOKA UTMB Mont-Blanc week draws more than 10,000 runners across its distances, and entry now runs through a qualifying and lottery system precisely because demand overwhelmed open registration years ago.

When the scarce resource becomes the starting line itself, you are looking at a sport in genuine boom.

The Numbers at a Glance

• +1,676%: global ultra participation growth from 1996 to 2018 (34,401 to 611,098 yearly participations).
• +345%: participation growth in the decade to 2018.
• 20 million+: trail running participants worldwide, growing about 12% a year (ITRA).
• 8,402 to 86,885: North American unique ultra runners, 2000 to 2024, roughly 10x.
• ~150,000: North American ultra finishers in 2025 across about 3,270 events.
• +6.5%: average US ultra growth from 2024 to 2025 (RunSignup).
• 11,328: applicants for 369 Western States 100 spots in the 2026 lottery.
• 8 minutes: how fast 6,000 UTMB spots sold in 2008.

Every lens, whether it is a 23-year global study, a national finish log, a single registration platform, or the entry queue at a flagship race, shows the same slope.

Why This Matters to Us

At OFFFIELD, we build for exactly this athlete: the person choosing the long effort, the early alarm, the start line most people would call excessive. That group is not shrinking. By every public measure, it is one of the fastest-growing communities in sport.

Our High Performance Energy Gummies are made for the training that these numbers represent, precision-dosed and built for endurance and focus rather than a heavy hit. As the sport grows, so does the number of people looking for cleaner, smarter ways to support the long miles. That is the whole point.

Movement Made Happy. And clearly, a lot more people are moving.

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Legal disclaimer: This article is for educational and informational purposes only and is not medical advice. Statistics are drawn from publicly available third-party sources cited below and were accurate to the best of our knowledge at the time of writing. OFFFIELD products are hemp-derived and formulated for adults 21 and over.

Related Reading

• Cannabis and Ultrarunning: A Mind-Body Endurance Culture
• High Performance Energy Gummies Are Built for Ultrarunning
• The Hyrox Boom and the Rise of the Hybrid Athlete
• The Pickleball Boom and Recovery for the Active Player

References

1. RunRepeat and the International Association of Ultrarunners (IAU). The State of Ultra Running 2020. https://runrepeat.com/state-of-ultra-running
2. Ultrarunning Magazine. North American Ultrarunning Participation and Finishes. https://ultrarunning.com/calendar/stats/ultrarunning-finishes
3. RunSignup. 2025 Ultramarathon Statistics: Demographics, Growth, and Registration Trends. April 2026. https://info.runsignup.com/2026/04/16/2025-ultramarathon-statistics/
4. International Trail Running Association (ITRA). https://itra.run/
5. Western States Endurance Run. 2026 Lottery Statistics. December 2025. https://www.wser.org/2025/12/03/2026-lottery-statistics/
6. Ultra-Trail du Mont-Blanc, race history and participation. https://en.wikipedia.org/wiki/Ultra-Trail_du_Mont-Blanc