Clement Choy
Born : 1947 Cat. M75 Ultrarunner since 1996 USA
74
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
80
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 ?ITAItalyUSAUnited States
52,3%
Rank quotient ?This runner's calculation uses 156 eligible race(s): Σ(rank − 1) = 13 849; Σ finishers = 26 460. 13 849 / 26 460 × 100 = 52.34%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed156
Km — ultra races10 718 km
> 100 km6
> 160 km6
Longest race160,9 km

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road8,1%
Trail91,9%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M4
Longest winning streak0
Current streak0

HISTORY

156 race(s)
DateRacePerf.Rk
2019
04.08 50km USA38th Skyline 50k Endurance Run 8:40:24 h158
11.05 50km USA36th Quicksilver 50 km Endurance Run 9:29:31 h101
2018
05.08 50km USA37th Skyline 50k Endurance Run 8:03:01 h148
20.05 50km USA31th Ohlone 50K Wilderness Run 10:20:36 h127
12.05 50km USA35th Quicksilver 50 km Endurance Run 9:49:33 h163
2017
09.12 50km USA9th Hunter S. Thompson Fear & Loathing 50 km 8:03:20 h31
25.11 28mi USA33rd Quad Dipsea Trail Run 9:22:36 h299
18.11 50km USA11th Endurance Challenge - California Trail 50 km 9:57:40 h518
06.08 50km USA36th Skyline 50k Endurance Run 8:26:50 h184
11.03 50km USA6th Marin Ultra Challenge 50 km Race 9:06:21 h189
2016
26.11 28mi USA32nd Quad Dipsea Trail Run 9:27:19 h274
09.04 50mi USA8th Lake Sonoma 50 Mile Race 15:06:55 h304
2015
28.11 28mi USA31st Quad Dipsea Trail Run 8:14:47 h262
25.10 50mi USA16th Tussey Mountainback 50 Miler 10:46:00 h58
10.10 50mi USA33rd Dick Collins Firetrails 50 Mile 12:41:23 h177
20.09 50km USA28th Ohlone 50K Wilderness Run 10:11:38 h92
08.08 50km USA34th Skyline 50k Endurance Run 7:00:30 h116
2014
07.12 50km USA6th Hunter S. Thompson Fear & Loathing 50 km 7:18:00 h27
21.09 50km USA17th Pisgah Mountain Trail Race 8:19:53 h76
06.04 50km USA1st Runamuck 50K 6:46:00 h27
2013
26.10 100mi USA5th Ghost Train Rail Trail Race 100 Mile 29:31:00 h43
29.09 50mi trail race USA20th Vermont 50 Miles Ultra Run 11:43:06 h212
15.09 50km USA16th Pisgah Mountain Trail Race 8:25:17 h89
03.08 36mi USA2nd Moosalamoo Ultra 11:34:18 h28
2012
30.09 50mi USA19th Vermont 50 Miles Ultra Run 12:24:06 h270
16.09 50km USA15th Pisgah Mountain Trail Race 8:34:17 h107
18.08 36mi USA1st Moosalamoo Ultra 11:32:25 h46
2011
05.11 37.5mi USA11th Stone Cat 37.5 Mile 9:04:00 h3 🥉
23.04 50km USA1st TARC Spring Classic 50 km 7:11:25 h37
2010
09.10 50mi USA28th Dick Collins Firetrails 50 Mile 12:30:40 h212
26.09 50mi USA17th Vermont 50 Miles Ultra Run 11:22:58 h154
19.09 50km USA13th Pisgah Mountain Trail Race 7:58:15 h80
13.03 42Miles USA1st Uncool 42 Miles 10:55:00 h2 🥈
2009
27.09 50km USA16th Vermont 50 km Ultra Run 7:56:19 h112
13.09 50km USA12th Pisgah Mountain Trail Race 8:32:59 h66
2008
11.10 50mi USA26th Dick Collins Firetrails 50 Mile 10:30:56 h93
09.08 50mi USA2nd Headlands Hundred 50 Mile Endurance Run 11:24:19 h47
03.08 50km USA27th Skyline 50k Endurance Run 5:47:56 h54
10.05 50mi USA25th Quicksilver 50 Mile Endurance Run 11:13:16 h60
05.04 50mi USA29th American River 50 Mile Endurance Run 10:24:37 h265
2007
13.10 50mi USA25th Dick Collins Firetrails 50 Mile 12:29:09 h207
05.08 50km USA26th Skyline 50k Endurance Run 6:49:40 h103
14.04 50mi USA28th American River 50 Mile Endurance Run 11:12:18 h358
2006
04.11 50mi USA11th Helen Klein Ultra Classic 50mi 10:00:34 h86
26.08 31.5mi USA9th Tamalpa Headlands 50K 6:58:45 h124
10.06 50km USA6th Mount Diablo 50K 7:22:49 h15
21.05 50km USA19th Ohlone 50K Wilderness Run 6:50:37 h55
13.05 50mi USA23rd Quicksilver 50 Mile Endurance Run 10:55:25 h33
06.05 100km USA11th Miwok 100k Trail race 13:06:06 h128
22.04 50mi USA14th Leona Divide 50 Mile Run 10:46:36 h89
01.04 50mi USA27th American River 50 Mile Endurance Run 9:47:23 h174
04.02 50km USA5th Woodside Trail Run 50K 6:25:43 h43
2005
15.10 50mi USA23rd Dick Collins Firetrails 50 Mile 10:06:34 h71
17.09 50km USA1st Psychedelic Climacteric 50k 8:26:00 h11
20.08 100km USA4th Where's Waldo 100K Ultramarathon 19:36:40 h35
07.08 50km USA24th Skyline 50k Endurance Run 6:11:38 h71
07.05 50mi USA22nd Quicksilver 50 Mile Endurance Run 9:57:02 h35
16.04 50mi USA3rd Diablo Endurance Run 14:15:37 h46
02.04 50mi USA26th American River 50 Mile Endurance Run 9:34:03 h173
20.03 50km USA4th Stevens Creek Striders 50K 7:03:04 h40
19.03 50km USA3rd Rucky Chucky Roundabout 50K 6:44:12 h53
08.01 54km USA26th Epiphany Ultras - The Popular But Wussy Metric 6:43:00 h6
2004
04.12 50km USA18th OTHTC High Desert 50K Ultra 5:07:21 h50
09.10 50mi USA22nd Dick Collins Firetrails 50 Mile 10:04:37 h61
01.08 50km USA23rd Skyline 50k Endurance Run 5:26:32 h54
17.04 50mi USA13th Leona Divide 50 Mile Run 10:39:29 h67
03.04 50mi USA25th American River 50 Mile Endurance Run 10:01:32 h211
21.03 50km USA3rd Stevens Creek Striders 50K 6:47:01 h29
07.02 50km USA3rd Woodside Trail Run 50K 6:31:09 h49
10.01 53km USA25th Epiphany Ultras - The Popular But Wussy Metric 6:21:00 h13
2003
11.10 50mi USA21st Dick Collins Firetrails 50 Mile 10:34:31 h87
23.08 31.5mi USA6th Tamalpa Headlands 50K 6:30:14 h117
26.07 50km USA8th Baldy Peaks 50K 10:46:51 h53
19.07 50km USA3rd Tahoe Rim Trail 50km Endurance Runs 8:49:58 h112
12.04 50mi USA1st Diablo Endurance Run 16:50:07 h4
05.04 50mi USA24th American River 50 Mile Endurance Run 9:07:07 h156
22.03 50km USA2nd Stevens Creek Striders 50K 6:45:57 h25
08.03 50km USA14th Way Too Cool 50K Endurance Run 5:30:08 h184
08.02 50mi USA25th Jed Smith Ultra Classic - 50 Mile Race 8:08:10 h13
11.01 52km USAEpiphany Ultras - The Popular But Wussy Metric 5:52:00 h11
2002
23.11 50mi USA40th JFK 50 Mile 8:53:13 h125
12.10 50mi USA20th Dick Collins Firetrails 50 Mile 10:03:33 h54
24.08 31.5mi USA5th Tamalpa Headlands 50K 6:09:46 h113
10.08 50km USA1st Pony Express 50K Sprint 5:43:45 h7
29.06 100mi USA29th Western States 100 Mile Endurance Run 29:02:08 h203
11.05 50mi USA21th Ice Age Trail 50 Mile Run 9:19:35 h65
04.05 100km USA7th Miwok 100k Trail race 12:28:15 h79
06.04 50mi USA23rd American River 50 Mile Endurance Run 8:54:13 h110
23.03 50km USA1st Stevens Creek Striders 50K 7:11:26 h14
09.03 50km USA13th Way Too Cool 50K Endurance Run 5:23:30 h157
09.02 50mi USA24th Jed Smith Ultra Classic - 50 Mile Race 7:42:13 h7
2001
10.11 50mi USA6th Helen Klein Ultra Classic 50mi 7:56:20 h12
02.09 50mi USA7th Run On The Sly 50 Mile 10:38:22 h30
21.07 50km USA1st Tahoe Rim Trail 50km Endurance Runs 7:14:47 h48
23.06 100mi USA28th Western States 100 Mile Endurance Run 27:20:08 h146
09.06 50km USA4th Best Run By A Dam Site 5:16:34 h14
20.05 50km USA14th Ohlone 50K Wilderness Run 6:43:57 h19
12.05 50mi USA18th Quicksilver 50 Mile Endurance Run 10:24:40 h24
05.05 100km USA6th Miwok 100k Trail race 13:10:17 h85
07.04 50mi USA22nd American River 50 Mile Endurance Run 9:05:05 h112
10.02 50km USA23rd Jed Smith Ultra Classic - 50 km Race 4:32:30 h26
2000
25.11 28mi USA16th Quad Dipsea Trail Run 6:11:32 h109
11.11 50km USA5th Helen Klein Ultra Classic 50km 4:25:35 h5
14.10 50mi USA18th Dick Collins Firetrails 50 Mile 9:51:33 h43
16.09 52.4mi USA14th Sierra Nevada Endurance 52 Mile Run 11:11:57 h21
24.06 100mi USA27th Western States 100 Mile Endurance Run 29:36:14 h205
28.05 100km ITA28^ 100 km del Passatore, Firenze-Faenza 11:35:51 h157
21.05 50km USA13th Ohlone 50K Wilderness Run 8:07:13 h27
13.05 50mi USA17th Quicksilver 50 Mile Endurance Run 10:41:35 h22
01.04 50mi USA21st American River 50 Mile Endurance Run 9:43:37 h157
12.02 50km USA22nd Jed Smith Ultra Classic - 50 km Race 4:37:29 h36
1999
04.12 50mi USA10th Sunmart Texas Trails 50 Mile 8:52:24 h95
27.11 28mi USA15th Quad Dipsea Trail Run 6:33:06 h116
13.11 50mi USA4th Helen Klein Ultra Classic 50mi 7:53:15 h32
23.10 52.4mi USA13th Sierra Nevada Endurance 52 Mile Run 10:59:40 h45
25.09 100mi USA14th Angeles Crest 100 Mile 32:24:15 h86
05.09 50mi USA5th Run On The Sly 50 Mile 9:07:30 h11
28.08 31.5mi USA2nd Tamalpa Headlands 50K 5:53:29 h49
07.08 50km USA18th Skyline 50k Endurance Run 5:28:41 h69
12.06 50km USA2nd Best Run By A Dam Site 5:17:58 h10
05.06 50km USA10th Shadow of the Giants 50K 6:53:04 h65
08.05 50mi USA18th Ice Age Trail 50 Mile Run 9:04:00 h104
01.05 100km USA4th Miwok 100k Trail race 12:38:26 h59
10.04 50mi USA20th American River 50 Mile Endurance Run 8:21:01 h91
13.03 50km USA10th Way Too Cool 50K Endurance Run 5:32:28 h168
13.02 50km USA21st Jed Smith Ultra Classic - 50 km Race 4:18:03 h36
1998
12.12 50mi USA9th Sunmart Texas Trails 50 Mile 8:56:07 h86
28.11 28mi USA14th Quad Dipsea Trail Run 6:11:30 h93
14.11 50mi USA3rd Helen Klein Ultra Classic 50mi 7:50:14 h32
10.10 50mi USA16th Dick Collins Firetrails 50 Mile 9:41:43 h31
29.08 31.5mi USA1st Tamalpa Headlands 50K 6:08:06 h49
01.08 50km USA17th Skyline 50k Endurance Run 6:13:29 h118
27.06 100mi USA25th Western States 100 Mile Endurance Run 28:55:37 h169
13.06 50km USA1st Best Run By A Dam Site 5:18:17 h10
17.05 50km USA11th Ohlone 50K Wilderness Run 6:57:04 h54
16.05 50km USA13th Silver State 50 km 8:52:51 h39
09.05 50mi USA15th Quicksilver 50 Mile Endurance Run 9:38:47 h23
19.04 100km USA13th Ruth Anderson Ultra 100km 10:22:48 h16
04.04 50mi USA19th American River 50 Mile Endurance Run 8:43:00 h132
14.03 50km USA9th Way Too Cool 50K Endurance Run 5:42:23 h142
21.02 100km USA2nd Catalina 100K Trail Run 12:26:47 h26
07.02 50km USA20th Jed Smith Ultra Classic - 50 km Race 4:29:10 h29
1997
13.12 50mi USA8th Sunmart Texas Trails 50 Mile 8:50:31 h114
29.11 28mi USA13th Quad Dipsea Trail Run 6:23:27 h108
20.10 50mi USA15th Dick Collins Firetrails 50 Mile 9:34:19 h36
31.08 50mi USA3rd Run On The Sly 50 Mile 9:40:12 h27
02.08 50km USA16th Skyline 50k Endurance Run 5:33:32 h78
26.07 50mi USA16th Minnesota Voyageur Trail 50 Mile Ultra 10:48:59 h41
10.05 50km USA14th Quicksilver 50 km Endurance Run 5:38:24 h45
05.04 50mi USA18th American River 50 Mile Endurance Run 8:37:40 h139
15.03 50km USA8th Way Too Cool 50K Endurance Run 5:35:25 h173
18.01 50mi USA19th Jed Smith Ultra Classic - 50 Mile Race 7:37:56 h3 🥉
1996
12.12 50mi USA7th Sunmart Texas Trails 50 Mile 8:56:35 h117
30.11 28mi USA12th Quad Dipsea Trail Run 6:36:12 h135
16.11 50mi USA1st Helen Klein Ultra Classic 50mi 7:59:51 h11
03.08 50km USA15th Skyline 50k Endurance Run 5:56:14 h98