Yu-Yen (莫與炎) Mo
ID 489499
Born : 1969 Cat. M55 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.
53
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
2
Countries visited ?TPETaiwanUSAUnited States
41,8%
Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 2 363; Σ finishers = 5 655. 2 363 / 5 655 × 100 = 41.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42
Km — ultra races4 418 km
> 100 km18
> 160 km17
Longest race160,9 km
25th Tahoe Rim Trail 100M Endurance Run — 18/7/2026

Km per year (ultra races)

483
3 races
2022
322
2 races
2023
322
2 races
2024
2025
322
2 races
2026

Race types (share of distance)

Road8,7%
Trail91,3%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M3
Longest winning streak0
Current streak0

Records

50 km4h50'00100 km10h16'4150 mi7h49'36100 mi23h06'1312 h106,74 km

HISTORY

42 race(s) · 4 split(s) nested
DateRacePerf.Rk
2026
18.07 100mi USA25th Tahoe Rim Trail 100M Endurance Run 34:44:09 h90
13.06 100mi USA1st Bay Area 100 30:39:42 h67
2024
03.08 100mi USA36th Angeles Crest 100 Mile 31:42:11 h85
19.07 100mi USA26th Cascade Crest Classic 100 Mile 31:07:05 h81
2023
15.07 100mi USA22th Tahoe Rim Trail 100M Endurance Run 33:32:02 h82
24.06 100mi USA50th Western States 100 Mile Endurance Run 29:01:46 h262
2022
23.09 100mi USA24th The Bear 100 Mile Endurance Run 32:45:17 h173
06.08 100mi USA34rd Angeles Crest 100 Mile 33:48:47 h87
16.07 100mi USA21th Tahoe Rim Trail 100M Endurance Run 33:00:08 h49
2021
10.09 100mi USA42th Wasatch Front 100 Mile 35:08:15 h135
17.07 100mi USA20th Tahoe Rim Trail 100M Endurance Run 30:32:23 h34
2020
08.02 100km USA7th Sean O'Brien 100 km Trail Race 14:25:00 h84
2019
03.08 100mi USA32nd Angeles Crest 100 Mile 29:14:27 h69
19.05 50km USA32nd Ohlone 50K Wilderness Run 6:42:34 h24
27.04 100km USA6th The Canyons Endurance 100 km Run 14:16:02 h66
15.02 12h TPE8th Taipei 12hr Ultra Marathon Night Run 106.743 km8
2018
20.10 45km TPE3rd Jiuhua Mountain Ultra Run 5:24:16 h2 🥈
21.07 100mi USA17th Tahoe Rim Trail 100M Endurance Run 32:15:52 h95
20.05 50km USA31th Ohlone 50K Wilderness Run 6:23:54 h39
12.05 100km USA35th Quicksilver 100 km Endurance Run 14:09:45 h60
25.03 50km TPE3rd Ultra-Trail Yilan 8:35:25 h23
2017
04.11 100mi USA17th Rio Del Lago 100 Mile Endurance Run 23:06:13 h57
19.08 100km USA16th Waldo 100K Trail Run 13:35:40 h37
06.08 50km USA36th Skyline 50k Endurance Run 5:06:18 h32
09.06 100mi USA16th San Diego 100 Mile Endurance Run 26:21:40 h49
21.05 50km USA30th Ohlone 50K Wilderness Run 6:38:03 h23
23.04 50km USA31th Ruth Anderson Ultra 50km 4:50:00 h7
04.03 50km USA28th Way Too Cool 50K Endurance Run 5:23:37 h163
2016
01.10 50km USA2nd Pacifica Summit Trail Run 6:03:52 h3 🥉
10.09 100mi USA10th Headlands Hundred 100 Mile Endurance Run 25:40:04 h11
07.05 100km USA21st Miwok 100k Trail Race 13:14:32 h132
24.04 50km USA1st Coyote Lake Trail Run 5:25:00 h2 🥈
2015
10.10 50km USA7th Skyline to the Sea 50km 5:22:35 h17
02.05 100km USA20th Miwok 100k Trail Race 12:49:00 h107
18.04 100km USA29th Ruth Anderson Ultra 100km 10:16:41 h6
22.02 50km USA2nd West Coast 50K 5:53:58 h6
11.01 50km USA5th Crystal Springs 50 km Winter Trail Run 5:06:32 h15
2014
28.12 50km USA13th Woodside Trail Run 50K 5:05:45 h21
19.04 50mi USA28th Ruth Anderson Ultra 50mi 7:49:36 h8
11.01 50km USA4th Crystal Springs 50 km Winter Trail Run 5:06:38 h15
2008
06.12 50km USA7th Woodside Trail Run 50K 5:30:39 h20
Unknown date
— 100mi USA16th Pine to Palm 100 Mile Endurance Run 28:35:17 h59