William Davis
ID 67737
Born : 1946 Cat. M80 Ultrarunner since 1981 USA
41
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
1
Countries visited ?USAUnited States
21,9%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 1 577; Σ finishers = 7 216. 1 577 / 7 216 × 100 = 21.85%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races4 262 km
> 100 km15
> 160 km11
> 24h1
Longest race160,9 km
33th Western States 100 Mile Endurance Run — 24/6/2006

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road6,1%
Trail93,9%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 36
🏅 Top 3 M6
Longest winning streak2
Current streak0

Records

50 km4h48'09100 km10h34'5650 mi5h49'43100 mi17h24'1524 h100,99 km

HISTORY

41 race(s) · 2 split(s) nested
DateRacePerf.Rk
2009
04.04 50mi USA30th American River 50 Mile Endurance Run 9:15:52 h156
2008
09.08 50mi USA2nd Headlands Hundred 50 Mile Endurance Run 10:29:15 h31
2007
22.09 53.2mi USA21st Sierra Nevada Endurance 53 Mile Run 10:43:16 h16
02.09 50km USA12th Run On The Sly 50 km 6:19:49 h34
2006
24.06 100mi USA33th Western States 100 Mile Endurance Run 27:01:24 h93
20.05 50km USA21st Silver State 50 km 7:55:39 h19
2005
04.09 50mi USA11th Run On The Sly 50 Mile 9:46:16 h15
2004
03.04 50mi USA25th American River 50 Mile Endurance Run 9:05:03 h92
2003
28.06 100mi USA30th Western States 100 Mile Endurance Run 23:51:14 h95
18.05 50km USA16th Ohlone 50K Wilderness Run 6:12:27 h27
2002
29.06 100mi USA29th Western States 100 Mile Endurance Run 23:46:09 h85
19.05 50km USA15th Ohlone 50K Wilderness Run 5:35:03 h9
06.04 50mi USA23rd American River 50 Mile Endurance Run 8:02:18 h52
2001
13.10 50mi USA19th Dick Collins Firetrails 50 Mile 10:06:01 h43
1999
05.09 50mi USA5th Run On The Sly 50 Mile 10:02:33 h20
26.06 100mi USA26th Western States 100 Mile Endurance Run 23:29:12 h52
16.05 50km USA12th Ohlone 50K Wilderness Run 5:29:35 h12
10.04 50mi USA20th American River 50 Mile Endurance Run 8:32:27 h116
1998
27.06 100mi USA25th Western States 100 Mile Endurance Run 23:42:32 h56
04.04 50mi USA19th American River 50 Mile Endurance Run 8:40:27 h124
1997
28.06 100mi USA24th Western States 100 Mile Endurance Run 23:59:06 h106
1996
29.06 100mi USA23rd Western States 100 Mile Endurance Run 22:29:49 h29
1995
28.10 52.4mi USA9th Sierra Nevada Endurance 52 Mile Run 10:55:12 h32
1994
23.06 100mi USA21st Western States 100 Mile Endurance Run 23:00:48 h48
12.03 50km USA5th Way Too Cool 50K Endurance Run 4:48:09 h56
1993
26.06 100mi USA20th Western States 100 Mile Endurance Run 23:37:32 h45
1985
06.07 100mi USA12th Western States 100 Mile Endurance Run 17:24:15 h5
27.04 100km USASteamroller Ultra 10:34:56 h2 🥈
16.03 24h USA2nd Redwood Empire 24 Hour Run 100.986 km27
05.01 50mi USA5th Avalon Benefit 50-Mile Run 12:31:00 h58
1984
09.06 100mi USA6th Old Dominion 100 Mile Endurance Run 19:11:00 h1 🏆
28.04 100km USASteamroller Ultra 10:43:08 h1 🏆
1983
08.10 48.6mi USACow Mountain Planet Earth Run 6:37:50 h2 🥈
27.08 40mi USATimberline Trail 8:43:15 h22
25.06 93.5mi USA10th Western States 100 Mile Endurance Run 17:23:00 h3 🥉
20.02 50mi USAPacific Crest Trail Fifty 7:51:55 h4
1982
26.06 93.5mi USA9th Western States 100 Mile Endurance Run 18:10:00 h5
14.02 50mi USA5th Jed Smith Ultra Classic - 50 Mile Race 6:11:50 h7
1981
27.06 93.5mi USA8th Western States 100 Mile Endurance Run 20:35:00 h12
12.04 50mi USA2nd American River 50 Mile Endurance Run 6:24:10 h4
15.02 50mi USA4th Jed Smith Ultra Classic - 50 Mile Race 5:49:43 h2 🥈