John O'Shea
ID 639947
Born : 1982 Cat. M40 Ultrarunner since 2015 USA
22
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
42
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?USAUnited States
33,3%
Rank quotient ?This runner's calculation uses 22 eligible race(s): Σ(rank − 1) = 1 426; Σ finishers = 4 286. 1 426 / 4 286 × 100 = 33.27%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed22
Km — ultra races2 356 km
> 100 km9
> 160 km9
Longest race160,9 km
6th Dark Divide 100 Mile Race — 4/9/2026

Km per year (ultra races)

241
2 races
2022
161
1 race
2023
161
1 race
2024
2025
261
3 races
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km5h25'44100 km14h53'2850 mi7h52'51100 mi23h38'03

HISTORY

22 race(s)
DateRacePerf.Rk
2026
04.09 100mi USA6th Dark Divide 100 Mile Race 38:27:24 h66
09.05 50km USA6th Tiger Claw 7:34:18 h46
21.03 50km USA32nd Chuckanut 50K 5:59:27 h232
2024
14.06 100mi USA32nd Bighorn Mountain Wild & Scenic 100 Mile Trail Run 29:16:27 h62
2023
24.06 100mi USA50th Western States 100 Mile Endurance Run 23:38:03 h94
2022
09.04 100mi USA11th The Zion 100 Mile Run 27:00:26 h30
29.01 50mi USA5th Arches Ultra 50 Mile Race 7:52:51 h3 🥉
2021
24.09 100mi USA23rd The Bear 100 Mile Endurance Run 27:28:24 h44
28.08 100mi USA23rd Cascade Crest Classic 100 Mile 27:37:34 h35
26.06 50mi USA27th San Juan Solstice 50 Mile Run 10:58:37 h32
2019
27.09 100mi USA21st The Bear 100 Mile Endurance Run 27:48:06 h60
27.07 100km USA5th Never Summer 100k 16:42:02 h48
2018
07.09 100mi USA39th Wasatch Front 100 Mile 28:37:01 h40
14.07 100km USA5th Beaverhead 100K Endurance Run 14:53:28 h23
02.06 50mi USA5th Scout Mountain 50 Miles Ultra Trail 10:48:01 h14
24.03 50km USA13th Antelope Island Buffalo Run 50 km 5:25:44 h25
2017
08.09 100mi USA38th Wasatch Front 100 Mile 32:01:30 h106
29.07 50km USA10th Speedgoat 50k 8:40:46 h64
03.06 50mi USA21st Snow Peaks 50 Mile Trail Run 11:51:25 h44
2016
03.09 50km USA4th The Rut Mountain Runs 6:57:22 h259
2015
26.09 50mi USA2nd Endurance Challenge - Utah Trail 50 Miles 11:40:24 h39
14.02 55km USA9th Moab Red Hot 55k 5:51:02 h82