Sean Harrington
ID 140380
Born : 1977 Cat. M45 Ultrarunner since 2005 USA
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
4
Countries visited ?CANCanadaFRAFranceMARMoroccoUSAUnited States
34,7%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 2 777; Σ finishers = 7 995. 2 777 / 7 995 × 100 = 34.73%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed28
Km — ultra races2 014 km
> 100 km4
> 160 km3
> 200 km1
Longest race245,7 km
20. Marathon des Sables — 10/4/2005

Km per year (ultra races)

2022
45
1 race
2023
2024
100
1 race
2025
100
1 race
2026

Race types (share of distance)

Trail87,8%
Stage12,2%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M2
Longest winning streak0
Current streak0

Records

50 km4h25'33100 km11h51'0050 mi9h29'15100 mi23h29'30

HISTORY

23 race(s)
DateRacePerf.Rk
2026
25.04 100km USA13th The Canyons Endurance 100 km Run 14:15:21 h166
2025
03.05 100km USA28th Miwok 100k Trail Race 12:55:07 h92
2023
25.11 28mi USA38th Quad Dipsea Trail Run 5:54:43 h101
2019
30.11 28mi USA35th Quad Dipsea Trail Run 5:59:50 h76
20.01 50km USA9th Crystal Springs 50 km Winter Trail Run 5:25:10 h9
2017
18.11 50mi USA11th Endurance Challenge - California Trail 50 Mile 11:03:38 h298
2016
26.11 28mi USA32nd Quad Dipsea Trail Run 6:21:57 h96
05.03 50km USA27th Way Too Cool 50K Endurance Run 5:11:24 h171
2015
28.11 28mi USA31st Quad Dipsea Trail Run 5:46:41 h59
02.05 100km USA20th Miwok 100k Trail Race 11:51:00 h55
2014
28.06 100mi USA41st Western States 100 Mile Endurance Run 23:29:56 h112
03.05 100km USA19th Miwok 100k Trail Race 11:56:09 h43
2013
14.09 50mi USA7th Headlands Hundred 50 Mile Endurance Run 9:33:34 h24
27.04 50mi USA21st Leona Divide 50 Mile Run 9:48:09 h56
2012
15.09 100mi USA6th Headlands Hundred 100 Mile Endurance Run 23:29:30 h3 🥉
31.08 103.4km trail race FRA10ème Ultra Trail Tour du Mont Blanc (UTMB) 20:22:52 h1030
21.07 50mi USA11th Tahoe Rim Trail 50M Endurance Run 10:51:44 h31
19.05 50km USA2nd Horseshoe Lake 50 km Trail Run 4:25:33 h2 🥈
2011
13.08 50mi CAN3rd Iron Legs 50 Mile Mountain Race 11:29:30 h29
16.07 50mi USA5th Headlands Hundred 50 Mile Endurance Run 9:29:15 h18
23.01 50km USA8th Pacifica 50 km Trail Run - Winter Edition 5:19:01 h9
2007
01.12 50mi USA1st Endurance Challenge - California Trail 50 Mile 9:50:05 h20
2005
10.04 245.7km/6stages MAR20. Marathon des Sables 41:36:35 h300