Sangho Seo
ID 193065
Born : 1960 Cat. M65 Ultrarunner since 2008 USA
42
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
47
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
68,2%
Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 3 658; Σ finishers = 5 364. 3 658 / 5 364 × 100 = 68.20%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42
Km — ultra races2 912 km
> 100 km1
> 24h1
Longest race125,1 km
2nd Cirque to Griffith Park 24 Hour Run — 29/6/2019

Km per year (ultra races)

161
2 races
2022
100
1 race
2023
180
2 races
2024
311
4 races
2025
130
2 races
2026

Race types (share of distance)

Road6,0%
Trail94,0%

Records

50 km5h43'43100 km18h22'0650 mi10h04'3824 h125,14 km

HISTORY

42 race(s)
DateRacePerf.Rk
2026
06.06 50km USA37th Shadow of the Giants 50K 6:55:07 h67
31.01 50mi USA13th Sean O'Brien 50 Mile Trail Race 12:43:11 h20
2025
20.09 50mi USA13th Bryce 50 Mile Trail Run 16:32:53 h83
16.08 50km USA34th Bulldog 50k Ultra Run 7:31:43 h157
12.04 100km USA32nd Leona Divide 100 km Run 20:20:48 h73
22.02 50mi USA12th Sean O'Brien 50 Mile Trail Race 13:05:30 h33
2024
08.06 50mi USA3rd Malibu Canyon Trail Races (SAMO 50 Mile) 14:35:36 h66
20.04 100km USA31st Leona Divide 100 km Run 19:56:25 h62
2023
09.06 100km USA2nd Malibu Canyon Trail Races (SAMO 100 km) 18:49:47 h37
2022
03.12 50mi USA8th Ray Miller 50 Mile Trail Race 12:57:41 h46
23.04 50mi USA29th Leona Divide 50 Mile Run 12:56:38 h60
2021
04.12 50mi USA7th Ray Miller 50 Mile Trail Race 12:38:23 h58
2020
08.02 50mi USA7th Sean O'Brien 50 Mile Trail Race 13:47:50 h119
2019
24.08 50km USA28th Bulldog 50k Ultra Run 8:09:25 h116
29.06 24h USA2nd Cirque to Griffith Park 24 Hour Run 125.142 km21
01.06 50km USA23th Bishop High Sierra Ultramarathons 50 km 8:13:57 h49
06.04 50km USA27th Leona Divide 50 km Run 7:34:17 h97
16.02 50km USA10th Orange Curtain 50km Ultra Race 5:43:43 h12
2018
15.12 50km USA3rd Paramount Ranch Trail Run 6:10:53 h24
10.11 50km USA8th Chino Hills 50K Race 6:39:29 h60
25.08 50km USA27th Bulldog 50k Ultra Run 6:38:56 h86
07.07 50km USA13th Angeles National Forest 50k Trail Race 9:37:31 h70
09.06 50km USA29th Shadow of the Giants 50K 7:33:38 h126
14.04 50km USA26th Leona Divide 50 km Run 6:57:45 h73
24.02 55km USA5th Antelope Canyon 55 km Race 8:59:53 h150
03.02 50mi USA5th Sean O'Brien 50 Mile Trail Race 10:04:38 h12
2017
16.06 50mi USA5th Bryce 50 Mile Trail Run 16:41:55 h165
04.02 50mi USA4th Sean O'Brien 50 Mile Trail Race 12:04:15 h69
2016
09.07 50km USA11th Angeles National Forest 50k Trail Race 8:46:52 h65
16.04 50mi USA24th Leona Divide 50 Mile Run 13:08:53 h141
2015
22.08 50km USA24th Bulldog 50k Ultra Run 6:54:33 h149
25.04 50km USA23rd Leona Divide 50 km Run 9:23:50 h209
2014
17.05 100km USA21st Bishop High Sierra Ultramarathons 100 km 18:22:06 h41
26.04 50mi USA22nd Leona Divide 50 Mile Run 12:45:31 h172
2013
27.04 50mi USA21st Leona Divide 50 Mile Run 13:14:17 h212
2012
11.08 50km USA8th Angeles National Forest 50k Trail Race 10:08:13 h90
28.04 50mi USA20th Leona Divide 50 Mile Run 11:20:18 h153
25.02 50mi USA1st Ray Miller 50 Mile Trail Race 11:53:47 h58
2011
30.04 50mi USA19th Leona Divide 50 Mile Run 11:35:50 h180
2010
27.11 40mi USA2nd Santa Barbara Red Rock 40 Mile 11:42:00 h56
2009
08.08 50km USA5th Angeles National Forest 50k Trail Race 7:18:18 h82
2008
23.08 50km USA17th Bulldog 50k Ultra Run 6:54:37 h81