Marathon Demographics Statistics 2026

Marathon fields are younger and more international than at any point in recorded history. At the 2025 New York City Marathon, 24% of all finishers were under 30 - up from 17% just three years earlier - and 86% more men and 91% more women aged 18-29 crossed the line compared to a decade ago. Simultaneously, runners over 60 are the fastest-growing older demographic, with 88% more 60-plus finishers at NYC in 2025 than in 2015. Female participation is rising globally, nearing 50% of applicants at some major races. These 16 statistics map the current state of who runs marathons and where the field is heading.

Marathon participation is not just growing - it is fundamentally changing shape. The age curves, gender splits, and nationality breakdowns of 2025 look measurably different from 2015, driven by social media culture, improved race access, and a fitness generation coming of age with running as its default sport.

This post covers the most reliable demographics data available from major race organizations, RunRepeat research, and Running USA surveys. Whether you are planning your first marathon or your fifteenth, this data shows where you fit among the millions running globally.

1. 24% of NYC Marathon Finishers Were Under 30 in 2025

At the 2022 TCS New York City Marathon, just 17% of all finishers were under 30. By 2025, that figure had climbed to 24%. The largest single age bracket at the 2025 NYC race was the 25-29 cohort, with nearly 11,000 finishers in that group alone. This demographic shift reflects a broader trend: Gen Z and younger millennials are entering marathon running faster than any previous generation. Social media visibility, gamified running apps, and peer influence all appear to be accelerating the timeline from first run to first marathon. Our global running statistics breakdown shows how this youth surge fits into the broader participation boom.

Source: Sportico - NYC Marathon Record Turnout Intensifies Age Polarization Trend

2. 86% More Men and 91% More Women Aged 18-29 Finished NYC Marathon vs. 2015

The decade-long comparison is striking. Comparing 2025 NYC Marathon finishers to 2015 finishers by age cohort, 86% more men and 91% more women in the 18-29 bracket crossed the finish line. That is near-doubling of young adult finishers at the world's largest marathon in just ten years. The acceleration has been particularly sharp since 2020, suggesting that pandemic-era running adoption among younger people converted into long-term marathon participation. No previous decade produced this scale of generational entry into marathon racing.

Source: Sportico - NYC Marathon Record Turnout Intensifies Age Polarization Trend

3. 88% More 60-Plus Runners Completed NYC Marathon in 2025 vs. 2015

The youth surge is matched at the other end of the age spectrum. Among runners aged 60 and over, 88% more completed the 2025 NYC Marathon than did a decade earlier. Older runners are finishing longer - and faster - than previous generations at the same age. Improved nutrition science, better shoe technology, and access to structured training information have all contributed. Older women have been the fastest-growing demographic on the course, with 159% more women in their 60s running the NYC Marathon in 2025 than in 2015.

Source: Sportico - NYC Marathon Record Turnout Intensifies Age Polarization Trend

4. 250% More Women in Their 70s Finished NYC Marathon in 2025 vs. 2015

The most dramatic growth of any demographic segment: women in their 70s completing the NYC Marathon grew by 250% between 2015 and 2025. This reflects both a generational shift - older women today have far more lifetime athletic experience than their counterparts a decade ago - and improved medical understanding of endurance training for older adults. Running into your 70s was once considered exceptional; today, it is an achievable goal for a growing number of women who stayed active through middle age and are now tackling their first or fifth marathon.

Source: Sportico - NYC Marathon Record Turnout Intensifies Age Polarization Trend

5. The 2025 NYC Marathon Had 59,226 Finishers - a New World Record

The 2025 TCS New York City Marathon became the largest marathon ever held, with 59,226 finishers - a 6.5% increase over the 2024 record of 55,646. Of those, 31,927 were men, 27,156 were women, and 143 identified as nonbinary - the most nonbinary finishers ever recorded at the event. The dropout rate was an extraordinary 0.73%: of 59,662 starters, only 436 did not finish. The record surpasses London's 2025 record of 56,640 finishers, claiming New York's title as the world's largest marathon.

Source: MarathonHandbook - 2025 New York City Marathon Sets All-Time Finisher Record

6. Global Marathon Finishers Grew 14.6% in 2024 to 1.14 Million

Worldwide marathon participation grew 14.6% year-on-year in 2024, reaching 1,144,630 finishers across 135 surveyed marathons in 44 countries. Between 1.1 and 1.3 million people finish a marathon globally every year when all events are counted. The distribution is skewed toward North America and Europe, but Asia-Pacific and Latin America are showing disproportionate growth. The global marathon community has effectively doubled in size since the early 2000s, and the growth rate is accelerating rather than plateauing.

Source: Road Race Management - Global Road Running Finishers Up 17% in 2024

7. The US Median Marathon Time Is 4:10 for Men and 4:38 for Women

Performance benchmarks matter to demographics. RunRepeat's State of US Marathons 2025 found the median finish time for men at 4:10 (9:32 per mile pace) and for women at 4:38 (10:38 per mile pace). These figures reflect the broad recreational field rather than elite performance. The median is the more useful number for most runners - it tells you the time the middle finisher crosses the line, free from distortion by the small number of very fast elites at the front. For context, our marathon finishing time statistics cover how these medians vary by age group.

Source: RunRepeat - The State of US Marathons 2025

8. Female Marathon Participation in the US Sits at 41% of All Finishers

Women make up 41% of US marathon finishers as of 2024 - a slight decline from previous years despite growing in absolute numbers. Globally, female participation varies widely by region: approaching 50% at events like the NYC Marathon and London, but dropping to around 26% at the Tokyo Marathon, reflecting different cultural participation patterns. The worldwide average sits at roughly 30-35% female, with strong growth in North America and Europe. Female participation growth at the NYC Marathon has outpaced male growth over the last decade in nearly every age bracket.

Source: RunRepeat - The State of US Marathons 2025

9. The Under-25 Age Group Grew from 9.2% to 12.1% of US Marathon Fields

Between 2016 and 2024, the under-25 age group grew its share of US marathon fields from 9.2% to 12.1%. In absolute terms, this represents tens of thousands more young adults completing marathons each year. The data from RunRepeat shows this trend is consistent across large and small races, not just concentrated in high-profile events like NYC or Chicago. Younger runners are not just running 5Ks and half-marathons - they are committing to the full marathon at earlier ages than previous generations.

Source: RunRepeat - The State of US Marathons 2025

10. 31% of NYC Marathon Finishers in 2025 Came from 132 Countries

The NYC Marathon's international draw is unmatched in road running. In 2025, 31% of all finishers - more than 18,600 runners - came from 132 different countries outside the United States. The race attracted over 200,000 applicants for approximately 53,000 available spots. This international reach makes the NYC Marathon a genuine world event, not just an American one, and reflects a broader globalization of marathon running where serious recreational runners from Asia, Latin America, and Africa now target the World Marathon Majors as lifetime goals.

Source: MarathonHandbook - 8 Things We Learned From A Deep Dive Of The 2025 NYC Marathon Data

11. Only 4.48% of Marathon Finishers Break 3 Hours

The sub-3-hour marathon remains a significant athletic achievement. Across all global finishers, approximately 4.48% break three hours. Around 24% finish under four hours, which is the recreational benchmark for many. These proportions have remained stable even as field sizes have grown, indicating that the distribution of ability in the running population is consistent. The fastest 1% of finishers typically run under 2:45 for men and under 3:10 for women, though these cutoffs vary by race course and conditions.

Source: RunRepeat - Marathon Statistics 2024 Worldwide

12. The Average Age of Marathon Runners Has Increased Over the Past Decade

While the youngest cohorts are growing as a share of fields, the overall average age of marathon runners has trended upward over the past 15 years. Older runners have more years of base training, more disposable income for race entry and gear, and more flexible schedules for long training runs. RunRepeat data shows that runners in their 30s and 40s still dominate marathon fields by absolute number, with the 35-44 age bracket typically producing the largest single cohort at major events. The bimodal growth pattern - more young and more old - is reshaping field composition without shifting the median age dramatically.

Source: RunRepeat - The State of US Marathons 2025

13. Roughly 50% of Marathon Participants Are First-Timers

An estimated 50% of marathon participants in any given year are completing their first marathon. This figure, cited in multiple running industry analyses, reflects the high "graduation" rate from shorter races and the constant pipeline of new runners entering the sport. The flip side is significant dropout: many first-time marathoners do not complete a second. Those who do typically improve their time significantly on race two, as experience with pacing, fueling, and the mental demands of the back half of the race compensates for any plateau in physical fitness.

Source: RunRepeat - The State of US Marathons 2025

14. More Than 23,000 Runners Have Completed All Six World Marathon Majors

The Abbott World Marathon Majors Six Star program - requiring completion of Tokyo, Boston, London, Berlin, Chicago, and New York - has passed 23,000 finishers. More than 5,500 earned their sixth star in 2025 alone. The demographic profile of Six Star chasers skews older and more affluent, since completing all six requires international travel and years of lottery applications or qualifying times. But the program has democratized one of running's most prestigious goals by providing a structured framework accessible to any finisher, regardless of speed.

Source: World Marathoner - World Marathon Majors Six Star Finishers Statistics 2025

15. Tokyo Marathon Has Only 26.1% Female Finishers Despite 37,480 Runners

Gender participation varies dramatically by country. The 2025 Tokyo Marathon had just 26.1% female finishers among its 36,204 completers, compared to 46% female finishers at the NYC Marathon. The gap reflects cultural differences in women's sports participation rates in Japan, not a lack of athletic ability or running culture. Among international participants at Tokyo, female participation rates are considerably higher. As more Japanese women take up road racing - a trend already visible in shorter distances - the gender split at the Tokyo Marathon is expected to narrow over the next decade.

Source: Geeks on Feet - Tokyo Marathon 2025 in Numbers

16. US Marathon Participation Sits 12.8% Below Its 2014 All-Time Peak

Despite strong recent growth, the US marathon has not recovered to peak. The 2014 all-time high in US marathon participation came during the height of the running boom, driven partly by the barefoot/minimalist shoe trend and a surge in recreational endurance sport. The current base of 432,562 US marathon participants (2024) represents a 5.0% year-on-year gain but remains 12.8% below that 2014 ceiling. Whether a new record falls depends largely on whether the young runner cohort currently entering marathons for the first time makes it a multi-decade commitment.

Source: RunRepeat - The State of US Marathons 2025

What the Demographics Tell Runners

The marathon field is polarizing at the extremes and filling out in the middle. Young adults (18-29) and older runners (60+) are both growing faster than the 30-59 cohort that has historically dominated. This bimodal pattern suggests two separate motivations driving marathon growth: young runners chasing social proof and adventure early in life, and older runners completing bucket-list goals they could not fit in during their family-raising years.

The gender trend is also nuanced. Women are approaching demographic parity at elite international events like NYC and London, but globally the field is still around 65-70% male. The fastest gains are among women in their 60s and 70s, who have decades of accumulated fitness to draw on and are using marathon completion as a measure of healthy aging.

The key takeaway for anyone considering their first or next marathon: the field has never been more diverse, the finish times have never been more accessible, and the community of people who have done it is larger than at any point in history. The question of whether you belong in that field has a statistical answer - roughly 50% of people who start a marathon are doing it for the first time.

Marathon demographics in 2026 show a sport that is younger, older, more international, and more gender-balanced than at any previous point in the race's history.

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