🇺🇸 United StatesM20s
Mark Dowdle
Backyard specialist and 2026 Arrowhead 135 champion
73Backyard best
35:48Arrowhead 135
The people behind the distances
Ultrarunner Profiles
Verified performances, career progression, records, and the races that shaped them—connected across formats and traced back to public result sources.
Launch collection
Meet the runners
Records last reviewed August 17, 2026. Follow each source link for the complete organizer or database record.
View athlete record
🇩🇪 GermanyM35–39
Hendrik Boury
German backyard record holder and elite 48-hour runner
100German record
363.86248-hour kilometres
🇩🇪 GermanyM45
Norman Mascher-Aspensjö
Back-to-back German 24-hour champion
243.24724-hour kilometres
2×German champion
🇩🇪 GermanyOpen
Martin Stiller
GreenLoop winner and Last Soul final-five runner
66Last Soul yards
442.5Last Soul kilometres
🇩🇪 GermanyM23
Ayyoub El Osrouti
Last Soul assist with front-of-pack road speed
69+2026 Last Soul yards
662025 Last Soul yards
🇺🇸 United StatesM50
Harvey Lewis
Two-time Big’s champion and Badwater 135 winner
108Backyard best
25:50:23Badwater 135
🇦🇺 AustraliaM40
Phil Gore
Backyard world-record holder and 2025 Big’s champion
119Backyard world best
114Big’s yards
🇱🇹 LithuaniaM40
Aleksandr Sorokin
24-hour and 100 km world-record holder
319.61424-hour world record
6:05:35100 km world record
🇮🇹 ItalyM40
Andrea Marcato
Six-time 3,100 Mile champion and 10-day specialist
6×3,100 Mile champion
42d 17h3,100 Mile best
🇫🇮 FinlandM55
Ashprihanal Aalto
3,100 Mile course-record holder and nine-time winner
40d 09h3,100 Mile record
9×3,100 Mile winner
🇺🇸 United StatesW40
Courtney Dauwalter
Three-race 2023 trail champion and 200-mile specialist
3Major 100-mile wins
2d 09:55Moab 240
🇬🇧 Great BritainW45
Sarah Webster
24-hour world-record holder and 100 km medalist
278.622 km24-hour world record
7:03:40100 km best
🇵🇱 PolandW50
Patrycja Bereznowska
48-hour benchmark setter and 24-hour world champion
436.371 kmPolish 48-hour record
259.991 km24-hour world title
🇨🇦 CanadaW50
Viktoria Brown
72-hour record setter and six-day champion
471.631 km72-hour world record
747.384 kmSix-day best
🇺🇸 United StatesW45
Maggie Guterl
First woman to win Big’s and Cocodona 250 champion
60Big’s yards
3d 13:30Cocodona 250
🇩🇪 GermanyOpen
Caroline Maria Bolte
Provisional German women’s backyard record setter
52Last Soul yards
348.7 kmLast Soul distance
🇩🇪 GermanyM65
Hubert Karl
Provisional German M65 backyard record setter
45Last Soul yards
25×Spartathlon
🇵🇱 PolandM45
Łukasz Wróbel
Two-time Legends champion and former 116-yard world-record holder
116Backyard best
114Legends title defense
🇧🇪 BelgiumM40
Jan Vandekerckhove
Belgian 115-yard record holder and elite 24-hour runner
115Belgian backyard best
236.182 km24-hour best
🇧🇪 BelgiumM45
Frank Gielen
Belgian team world champion and 110-yard record setter
110Shared world-best mark
900.487 kmSix-day best
🇳🇿 New ZealandM30
Sam Harvey
New Zealand record holder and 118-yard world-record assist
118New Zealand record
15:16:54Tarawera 100 Mile
Editorial standard
What you can trust here
Athlete records often conflict across databases. These pages show where each important fact came from and where uncertainty still exists.
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Major results link directly to organizers, timing records, or established ultramarathon databases.
No invented biography
Personal stories are added only when a runner or reliable published interview provides them.
Corrections are welcome
Athletes can supply an image, clarify identity, or point us to a stronger primary source.