Billy Yang
ID 125916
Born : 1977 Cat. M45 Ultrarunner since 2009 USA
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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
3
Countries visited ?KORSouth KoreaSUISwitzerlandUSAUnited States
42,3%
Rank quotient ?This runner's calculation uses 33 eligible race(s): Σ(rank − 1) = 3 281; Σ finishers = 7 752. 3 281 / 7 752 × 100 = 42.32%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed33
Km — ultra races2 489 km
> 100 km4
> 160 km4
Longest race160,9 km
44th Wasatch Front 100 Mile — 8/9/2023

Km per year (ultra races)

206
3 races
2022
161
1 race
2023
50
1 race
2024
50
1 race
2025
2026

Race types (share of distance)

Road2,5%
Trail97,5%

Records

50 km5h03'31100 km11h48'4250 mi9h01'13100 mi24h00'2012 h62,76 km

HISTORY

33 race(s)
DateRacePerf.Rk
2025
07.06 50km USA4th Malibu Canyon Trail Races (SAMO 50 km) 6:25:04 h26
2024
20.04 50km USA31st Leona Divide 50 km Run 7:39:02 h25
2023
08.09 100mi USA44th Wasatch Front 100 Mile 34:36:36 h145
2022
29.10 100km USA20th Javelina Jundred 100 km Endurance Run 11:48:42 h14
25.08 56km SUI7ème Orsières-Champex-Chamonix 11:30:09 h709
05.03 50km USA16th Montaña de Oro 50 km Race 5:41:47 h10
2019
13.04 50mi USA11th Lake Sonoma 50 Mile Race 10:37:23 h120
13.01 12h USA2nd One Day in Auburn 12h Day Run 62.764 km5
2018
02.06 50km USA22th Bishop High Sierra Ultramarathons 50 km 7:04:46 h17
19.05 30mi USA8th Born to Run Ultra 30 Mile Marathon 5:23:36 h52
2017
19.08 100mi USA35th Leadville Trail 100 Mile 28:31:14 h145
09.07 50mi USA10th Leadville Silver Rush 50 Mile Run 11:33:44 h137
15.04 50mi USA9th Lake Sonoma 50 Mile Race 10:17:50 h111
2016
25.08 55km SUI3ème Orsières-Champex-Chamonix 12:44:01 h979
24.04 59.5km KOR2nd Korea 50K 10:41:22 h60
2015
07.11 50km USA3rd Ray Miller 50 km Trail Race 5:41:54 h16
27.06 100mi USA42nd Western States 100 Mile Endurance Run 25:49:52 h113
09.05 50km USA9th Whoo's In El Moro 50k Trail Races - Spring Edition 5:03:31 h20
25.04 50km USA23rd Leona Divide 50 km Run 5:18:18 h15
2014
02.08 100mi USA27th Angeles Crest 100 Mile 24:00:20 h15
29.03 50km USA4th Gorge Waterfalls 50k 5:34:04 h35
2013
12.10 100km USA2nd Cuyamaca 100 km Endurance Run 13:33:40 h28
27.07 50km USA6th Speedgoat 50k 8:13:21 h119
27.04 50mi USA21st Leona Divide 50 Mile Run 9:42:25 h49
2012
12.10 100km USA1st Cuyamaca 100 km Endurance Run 12:53:47 h17
22.09 50km USA6th Noble Canyon 50k 5:56:24 h43
19.02 50km USA2nd Bandit Ultra 50K Trail Run 5:22:59 h12
2011
09.04 50mi USA32nd American River 50 Mile Endurance Run 9:01:13 h131
2010
17.07 50mi USA4th Headlands Hundred 50 Mile Endurance Run 10:47:09 h25
05.06 50km USA2nd Blue Canyon 50 km Trail Race 7:44:00 h16
08.05 50mi USA7th PCT 50 Mile Trail Run 10:19:44 h34
18.04 50km USA3rd Skyline to the Sea 50km 5:11:27 h40
2009
08.03 50km USA2nd Malibu Creek Trail Run 6:19:49 h31