{"title":"25 Multiday Running Statistics for 2026","edition":"2026-09-13","url":"https://multidayrunning.com/multiday-running-statistics","attribution":"Multiday Running analysis of DUV and official organizer results. Underlying publishers retain their rights in their own materials.","sources":[{"id":"duv","name":"DUV annual statistics","href":"https://statistik.d-u-v.org/summary.php?country=all&language=EN#PerfbyDist","detail":"Worldwide distance-table cells, 2024 and 2025. M and F columns; database snapshot reviewed September 13, 2026."},{"id":"london","name":"London 24-hour: official results","href":"https://uk.srichinmoyraces.org/files/uk/result-pdfs/2025/Results%20Overall%202025.pdf","detail":"Both PDF pages, ranks 1-52, September 20-21, 2025. Distances, ages and withdrawal footnote.","context":"https://uk.srichinmoyraces.org/london-24/previous-results/2025"},{"id":"queens","name":"Queens 6-day and 10-day: official results","href":"https://us.srichinmoyraces.org/files/us/results/past-result-files/sri-chinmoy-6-10-day-race-2025-results2.pdf","detail":"PDF pages 1-3, April 2025. Eight women's six-day results and 25 ten-day results. Cumulative distances are in miles.","context":"https://us.srichinmoyraces.org/node/7061/previous-results/2025"},{"id":"bigs","name":"Big's 2025: official timing leaderboard","href":"https://my.raceresult.com/364272/results","detail":"Live Leaderboard view, retrieved after the event: all 72 displayed result rows. Completed-loop field; the configured filter excludes entrants without a recorded first loop."}],"statistics":[{"id":"24-hour-performances-2025","section":"participation","value":16685,"unit":"performances","display":"16,685","label":"24-hour performances in 2025","claim":"DUV recorded 16,685 24-hour performances in its 2025 worldwide distance table.","method":"11,776 M + 4,909 F records.","scope":"DUV worldwide 24-hour distance-table records, subject to its 45 km minimum for these timed formats; performances can include repeat runners. Not all race starts.","period":"2025","sourceId":"duv","sampleSize":16685,"evidence":"Sum of source counts"},{"id":"48-hour-performances-2025","section":"participation","value":2462,"unit":"performances","display":"2,462","label":"48-hour performances in 2025","claim":"DUV recorded 2,462 48-hour performances in its 2025 worldwide distance table.","method":"1,624 M + 838 F records.","scope":"DUV worldwide 48-hour distance-table records, subject to its 45 km minimum for these timed formats; performances can include repeat runners. Not all race starts.","period":"2025","sourceId":"duv","sampleSize":2462,"evidence":"Sum of source counts"},{"id":"6-day-performances-2025","section":"participation","value":553,"unit":"performances","display":"553","label":"6-day performances in 2025","claim":"DUV recorded 553 6-day performances in its 2025 worldwide distance table.","method":"386 M + 167 F records.","scope":"DUV worldwide 6-day distance-table records, subject to its 45 km minimum for these timed formats; performances can include repeat runners. Not all race starts.","period":"2025","sourceId":"duv","sampleSize":553,"evidence":"Sum of source counts"},{"id":"24-hour-recorded-growth","section":"participation","value":15.08483928817768,"unit":"percent","display":"+15.1%","label":"24-hour change from 2024 to 2025","claim":"DUV's recorded 24-hour performances increased 15.1% from 2024 to 2025.","method":"(16,685 - 14,498) / 14,498 x 100.","scope":"Change in database counts; not a matched-race growth estimate. Coverage and backfills can change.","period":"2024-2025","sourceId":"duv","sampleSize":16685,"numerator":2187,"denominator":14498,"evidence":"Multiday Running calculation"},{"id":"48-hour-recorded-growth","section":"participation","value":50.857843137254896,"unit":"percent","display":"+50.9%","label":"48-hour change from 2024 to 2025","claim":"DUV's recorded 48-hour performances increased 50.9% from 2024 to 2025.","method":"(2,462 - 1,632) / 1,632 x 100.","scope":"Change in database counts; not a matched-race growth estimate. Coverage and backfills can change.","period":"2024-2025","sourceId":"duv","sampleSize":2462,"numerator":830,"denominator":1632,"evidence":"Multiday Running calculation"},{"id":"6-day-recorded-growth","section":"participation","value":15.44885177453027,"unit":"percent","display":"+15.4%","label":"6-day change from 2024 to 2025","claim":"DUV's recorded 6-day performances increased 15.4% from 2024 to 2025.","method":"(553 - 479) / 479 x 100.","scope":"Change in database counts; not a matched-race growth estimate. Coverage and backfills can change.","period":"2024-2025","sourceId":"duv","sampleSize":553,"numerator":74,"denominator":479,"evidence":"Multiday Running calculation"},{"id":"24-hour-women-share","section":"participation-by-category","value":29.4216362001798,"unit":"percent","display":"29.4%","label":"Women's share of 24-hour records","claim":"The F category accounted for 29.4% of DUV's 24-hour performances in 2025.","method":"4,909 / 16,685 x 100. The denominator is the sum of M and F records.","scope":"Source-recorded categories and performances; not unique people or inferred gender identities.","period":"2025","sourceId":"duv","sampleSize":16685,"numerator":4909,"denominator":16685,"evidence":"Multiday Running calculation"},{"id":"48-hour-women-share","section":"participation-by-category","value":34.03736799350121,"unit":"percent","display":"34.0%","label":"Women's share of 48-hour records","claim":"The F category accounted for 34.0% of DUV's 48-hour performances in 2025.","method":"838 / 2,462 x 100. The denominator is the sum of M and F records.","scope":"Source-recorded categories and performances; not unique people or inferred gender identities.","period":"2025","sourceId":"duv","sampleSize":2462,"numerator":838,"denominator":2462,"evidence":"Multiday Running calculation"},{"id":"6-day-women-share","section":"participation-by-category","value":30.198915009041592,"unit":"percent","display":"30.2%","label":"Women's share of 6-day records","claim":"The F category accounted for 30.2% of DUV's 6-day performances in 2025.","method":"167 / 553 x 100. The denominator is the sum of M and F records.","scope":"Source-recorded categories and performances; not unique people or inferred gender identities.","period":"2025","sourceId":"duv","sampleSize":553,"numerator":167,"denominator":553,"evidence":"Multiday Running calculation"},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-median-distance","value":164.40800000000002,"unit":"km","display":"164.4 km","label":"Median distance at London 24-hour","claim":"The median distance across all 52 published London 24-hour results in 2025 was 164.4 km.","method":"Arithmetic mean of the 26th and 27th distances in sorted order; early withdrawals retained."},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-middle-half","value":136.653,"upperValue":183.17825,"unit":"km","display":"136.7-183.2 km","label":"The middle 50% of London distances","claim":"The 25th-to-75th percentile interval for London's 52 published 24-hour results in 2025 was 136.7-183.2 km.","method":"Linearly interpolated 25th and 75th percentiles: position = (n - 1) x probability, zero-indexed (R type 7)."},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-100-miles","value":59.61538461538461,"unit":"percent","display":"59.6%","label":"London results reaching 100 miles","claim":"31 of London's 52 published 24-hour results in 2025 (59.6%) reached at least 100 miles.","method":"Count distances >= 160.9344 km; divide by all 52 result rows.","numerator":31,"denominator":52},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-200-km","value":13.461538461538462,"unit":"percent","display":"13.5%","label":"London results reaching 200 km","claim":"7 of London's 52 published 24-hour results in 2025 (13.5%) reached at least 200 km.","method":"Count distances >= 200 km; divide by all 52 result rows.","numerator":7,"denominator":52},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-median-age","value":47,"unit":"years","display":"47 years","label":"Median age in the London results","claim":"The median recorded age among the 52 runners in London's 2025 24-hour result sheet was 47 years.","method":"Median of the organizer's Age column. All 52 result rows have a recorded age."},{"section":"24-hour-benchmarks","period":"September 20-21, 2025","sourceId":"london","sampleSize":52,"evidence":"Multiday Running calculation","scope":"All 52 published London 24-hour results, including nine marked as early withdrawals. One track race, not a worldwide benchmark.","id":"london-24-hour-age-50-plus","value":32.69230769230769,"unit":"percent","display":"32.7%","label":"London runners aged 50 or older","claim":"17 of the 52 runners in London's 2025 24-hour result sheet (32.7%) were recorded as aged 50 or older.","method":"Count recorded ages >= 50; divide by all 52 result rows.","numerator":17,"denominator":52},{"section":"multiday-benchmarks","period":"April 2025","sourceId":"queens","evidence":"Multiday Running calculation","scope":"One Queens race festival. Six-day sample: eight women, no men's entries. Ten-day sample: 16 men and nine women. All published totals retained.","id":"queens-six-day-median","value":403.8648768,"unit":"km","sampleSize":8,"display":"403.9 km","label":"Median distance in the Queens six-day field","claim":"The eight women in the 2025 Queens six-day results recorded a median 403.9 km (250.9 miles).","method":"Median of eight final mile totals, multiplied by 1.609344. Includes the result with no additional mileage on days five and six."},{"section":"multiday-benchmarks","period":"April 2025","sourceId":"queens","evidence":"Multiday Running calculation","scope":"One Queens race festival. Six-day sample: eight women, no men's entries. Ten-day sample: 16 men and nine women. All published totals retained.","id":"queens-ten-day-median","value":812.5577856,"unit":"km","sampleSize":25,"display":"812.6 km","label":"Median distance in the Queens ten-day field","claim":"The median of the 25 published Queens ten-day results in 2025 was 812.6 km (504.9 miles).","method":"Median of the 25 final mile totals, multiplied by 1.609344. Original distances were published to one decimal place."},{"section":"multiday-benchmarks","period":"April 2025","sourceId":"queens","evidence":"Multiday Running calculation","scope":"One Queens race festival. Six-day sample: eight women, no men's entries. Ten-day sample: 16 men and nine women. All published totals retained.","id":"queens-ten-day-500-miles","value":56.00000000000001,"unit":"percent","sampleSize":25,"display":"56.0%","label":"Queens ten-day results reaching 500 miles","claim":"14 of the 25 published Queens ten-day results in 2025 (56.0%) reached at least 500 miles.","method":"Count final distances >= 500 miles; divide by all 25 ten-day results.","numerator":14,"denominator":25},{"section":"multiday-benchmarks","period":"April 2025","sourceId":"queens","evidence":"Multiday Running calculation","scope":"One Queens race festival. Six-day sample: eight women, no men's entries. Ten-day sample: 16 men and nine women. All published totals retained.","id":"queens-ten-day-second-half","value":-13.073055309080168,"unit":"percent","sampleSize":25,"display":"-13.1%","label":"Median change in second-half mileage","claim":"In the 25 Queens ten-day results from 2025, the median runner-level change in mileage from days 1-5 to days 6-10 was -13.1%.","method":"For each result: ((day 10 - day 5) / day 5 - 1) x 100; then take the median. Includes pauses and early stops, not just moving pace."},{"section":"multiday-benchmarks","period":"April 2025","sourceId":"queens","evidence":"Multiday Running calculation","scope":"One Queens race festival. Six-day sample: eight women, no men's entries. Ten-day sample: 16 men and nine women. All published totals retained.","id":"queens-ten-day-women-share","value":36,"unit":"percent","sampleSize":25,"display":"36.0%","label":"Women's share of the Queens ten-day field","claim":"Women made up 36.0% of the 25 published Queens ten-day results in 2025.","method":"Nine women's results / (16 men's + nine women's results) x 100.","numerator":9,"denominator":25},{"section":"backyard-benchmarks","period":"October 2025","sourceId":"bigs","sampleSize":72,"evidence":"Multiday Running calculation","scope":"72 published Big's 2025 leaderboard rows with a recorded first loop. Selected championship field; not all entrants or typical backyard runners.","id":"bigs-backyard-median-loops","value":62.5,"unit":"loops","display":"62.5 loops","label":"Median completed loops at Big's","claim":"The median completed-loop total in the 72 published Big's Backyard Ultra 2025 leaderboard results was 62.5.","method":"Median of the timing provider's NumberOfLaps field. Loop totals retained for athletes classified as DNF."},{"section":"backyard-benchmarks","period":"October 2025","sourceId":"bigs","sampleSize":72,"evidence":"Multiday Running calculation","scope":"72 published Big's 2025 leaderboard rows with a recorded first loop. Selected championship field; not all entrants or typical backyard runners.","id":"bigs-backyard-24-loops","value":94.44444444444444,"unit":"percent","display":"94.4%","label":"Big's results reaching 24 loops","claim":"68 of the 72 published Big's Backyard Ultra 2025 leaderboard results (94.4%) recorded at least 24 completed loops.","method":"Count NumberOfLaps >= 24; divide by the 72 displayed leaderboard rows. This is a milestone share, not a finish rate.","numerator":68,"denominator":72},{"section":"backyard-benchmarks","period":"October 2025","sourceId":"bigs","sampleSize":72,"evidence":"Multiday Running calculation","scope":"72 published Big's 2025 leaderboard rows with a recorded first loop. Selected championship field; not all entrants or typical backyard runners.","id":"bigs-backyard-48-loops","value":72.22222222222221,"unit":"percent","display":"72.2%","label":"Big's results reaching 48 loops","claim":"52 of the 72 published Big's Backyard Ultra 2025 leaderboard results (72.2%) recorded at least 48 completed loops.","method":"Count NumberOfLaps >= 48; divide by the 72 displayed leaderboard rows. This is a milestone share, not a finish rate.","numerator":52,"denominator":72},{"section":"backyard-benchmarks","period":"October 2025","sourceId":"bigs","sampleSize":72,"evidence":"Multiday Running calculation","scope":"72 published Big's 2025 leaderboard rows with a recorded first loop. Selected championship field; not all entrants or typical backyard runners.","id":"bigs-backyard-72-loops","value":37.5,"unit":"percent","display":"37.5%","label":"Big's results reaching 72 loops","claim":"27 of the 72 published Big's Backyard Ultra 2025 leaderboard results (37.5%) recorded at least 72 completed loops.","method":"Count NumberOfLaps >= 72; divide by the 72 displayed leaderboard rows. This is a milestone share, not a finish rate.","numerator":27,"denominator":72},{"section":"backyard-benchmarks","period":"October 2025","sourceId":"bigs","sampleSize":72,"evidence":"Multiday Running calculation","scope":"72 published Big's 2025 leaderboard rows with a recorded first loop. Selected championship field; not all entrants or typical backyard runners.","id":"bigs-backyard-100-loops","value":11.11111111111111,"unit":"percent","display":"11.1%","label":"Big's results reaching 100 loops","claim":"8 of the 72 published Big's Backyard Ultra 2025 leaderboard results (11.1%) recorded at least 100 completed loops.","method":"Count NumberOfLaps >= 100; divide by the 72 displayed leaderboard rows. This is a milestone share, not a finish rate.","numerator":8,"denominator":72}],"inputs":{"edition":"2026-09-13","dataYear":2025,"duv":{"source":"https://statistik.d-u-v.org/summary.php?country=all&language=EN#PerfbyDist","table":"Count of performances by distance in races in World","formats":[{"id":"24-hour","label":"24-hour","men2024":10165,"women2024":4333,"men2025":11776,"women2025":4909},{"id":"48-hour","label":"48-hour","men2024":1058,"women2024":574,"men2025":1624,"women2025":838},{"id":"6-day","label":"6-day","men2024":318,"women2024":161,"men2025":386,"women2025":167}],"inclusionSource":"https://statistik.d-u-v.org/faq.php?language=EN#Inclusion","minimumDistanceKm":45},"london":{"source":"https://uk.srichinmoyraces.org/files/uk/result-pdfs/2025/Results%20Overall%202025.pdf","contextSource":"https://uk.srichinmoyraces.org/london-24/previous-results/2025","event":"Self-Transcendence 24 Hour Track Race, Battersea Park, London","startDate":"2025-09-20","endDate":"2025-09-21","sampleSize":52,"distanceKm":[242.939,223.033,210.39,204.255,201.338,201.327,200.234,195.354,190.878,188.605,187.616,185.406,183.2,183.171,181.478,181.2,180,176.523,176.517,174.554,171.624,171.213,169.599,167.67,165.421,165.263,163.553,162.8,162.383,162,161.2,155.631,152.721,148.169,146.167,144.938,141.807,141.205,138.356,131.544,128.113,124.353,121.6,118.837,110.17,106.8,105.6,100,100,100,56,36],"ageYears":[47,41,27,46,42,37,43,48,42,51,48,48,55,47,44,38,55,47,57,61,49,48,33,53,48,45,23,34,50,47,51,47,54,51,51,49,43,40,48,30,70,75,26,47,50,45,41,24,50,55,46,60],"withdrawnRanks":[13,16,43,46,47,48,50,51,52]},"queens":{"source":"https://us.srichinmoyraces.org/files/us/results/past-result-files/sri-chinmoy-6-10-day-race-2025-results2.pdf","contextSource":"https://us.srichinmoyraces.org/node/7061/previous-results/2025","unitSource":"https://3100.srichinmoyraces.org/3100-mile-runners-2025-edition?page=2","event":"Sri Chinmoy 6 and 10 Day Races, Flushing Meadows Corona Park, Queens, New York","endDate":"2025-04-29","sixDay":{"startDate":"2025-04-23","sampleSize":8,"women":8,"finalMiles":[285.7,279.7,255.1,254.3,247.6,227.4,148.1,131.6]},"tenDay":{"startDate":"2025-04-19","sampleSize":25,"women":9,"dayFiveMiles":[397.2,353.8,348.6,343.3,308.2,295.5,291,275.3,402.4,227.4,224.4,216.9,206.4,191.5,196.7,172.8,338.1,311.9,326.9,267,270,320.1,235.6,183.3,158.6],"finalMiles":[726.3,642.5,630.5,605.9,601.4,554.3,535.6,506.4,503.4,449.5,440.6,427.8,406.2,375.5,374,294.7,632,626.1,609.6,529.6,504.9,456.3,377,350.8,276.8]}},"bigs":{"source":"https://my.raceresult.com/364272/results","rulesSource":"https://bigsbackyardultra.com/rules/","event":"Big's Backyard Ultra Individual World Championship, Bell Buckle, Tennessee","startDate":"2025-10-18","endDate":"2025-10-23","listing":"Presenter/Announcer|Live Leaderboard","sampleSize":72,"selection":"Published leaderboard rows with a recorded first loop and status 0 or 3, as configured by the timing provider. This is a leaderboard sample, not a count of all entrants.","completedLoops":[114,113,111,111,106,105,103,100,98,95,93,92,88,88,87,86,80,80,77,77,76,75,75,74,74,73,72,70,67,67,67,65,65,63,63,63,62,61,61,60,59,59,57,56,56,55,54,54,52,51,51,50,43,42,42,42,42,40,40,39,38,38,36,35,35,28,25,24,20,17,16,6],"startTimeLocal":"2025-10-18T07:00:00-05:00","timeZone":"America/Chicago","endDateMethod":"Inferred from the timing provider's announced 7:00 a.m. Central start on October 18 and the winning 114th loop, which began 113 hours later and took 37:03. The final loop finished at 00:37:03 Central on October 23. The event listing's scheduled end date is not used."}}}