Bill Losey
ID 46864
Born : 1971 Cat. M55 Ultrarunner since 2002 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
57
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
59,3%
Rank quotient ?This runner's calculation uses 75 eligible race(s): Σ(rank − 1) = 3 810; Σ finishers = 6 425. 3 810 / 6 425 × 100 = 59.30%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed75
Km — ultra races6 802 km
> 100 km29
> 160 km20
> 24h1
> 48h1
Longest race160,9 km
15th The Bear 100 Mile Endurance Run — 27/9/2013

Km per year (ultra races)

50
1 race
2022
50
1 race
2023
50
1 race
2024
50
1 race
2025
2026

Race types (share of distance)

Road2,4%
Trail97,6%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M4
Longest winning streak0
Current streak0

Records

50 km5h08'33100 km18h41'5650 mi7h24'00100 mi23h10'1048 h160,93 km

HISTORY

75 race(s)
DateRacePerf.Rk
2025
08.11 50km USA5th Kessel Run 50 km Ultra Race 8:54:41 h87
2024
21.09 50km USA3rd Red Feather Trail Jamboree - 50k 8:35:59 h108
2023
22.09 50km USA2nd Red Feather Trail Jamboree - 50k 8:15:11 h69
2022
17.09 50km USA1st Red Feather Trail Jamboree 7:51:11 h75
2020
17.10 55km USA7th Indian Creek Fifties - 55 km 9:10:00 h44
2019
13.04 50km USA16th Desert Rats Trail Running Festival 50 km 6:57:14 h117
2018
14.04 50km USA15th Desert Rats Trail Running Festival 50 km 7:03:12 h91
2017
19.08 50km USA9th Silverton Alpine 50K 6:53:10 h22
2016
23.07 100km USA2nd Never Summer 100k 22:03:57 h160
2014
18.10 50km USA1st Dead Horse 50 km Race 6:01:19 h21
2013
27.09 100mi USA15th The Bear 100 Mile Endurance Run 35:18:00 h159
14.06 100mi USA22nd Bighorn Mountain Wild & Scenic 100 Mile Trail Run 33:18:20 h116
01.06 50km USA5th Golden Gate Dirty 30 8:46:42 h227
2012
28.10 50km USA10th Stone Steps 50K Trail Run 6:15:44 h36
13.07 100mi USA19th Hardrock Hundred Endurance Run 47:40:00 h95
12.05 100mi USA18th Massanutten Mountain Trails 100 Mile 33:56:25 h93
2011
23.10 50km USA9th Stone Steps 50K Trail Run 5:57:13 h28
03.09 48h USA2nd Silverton 48 hour Challenge 160.934 km2 🥈
14.05 100mi USA17th Massanutten Mountain Trails 100 Mile 34:19:20 h112
2010
24.10 50km USA8th Stone Steps 50K Trail Run 6:40:23 h44
16.10 100mi USA2nd Oil Creek 100 Miles Trail Run 28:26:36 h38
18.09 50km USA6th Youngstown Ultra Trail Classic 50K 5:56:01 h26
10.09 100mi USA31st Wasatch Front 100 Mile 35:12:36 h160
15.05 100mi USA16th Massanutten Mountain Trails 100 Mile 34:57:34 h104
24.04 50km USA4th John Bryan 50k 5:20:08 h20
2009
25.10 50km USA7th Stone Steps 50K Trail Run 5:20:43 h12
25.09 100mi USA11th The Bear 100 Mile Endurance Run 32:56:26 h68
23.08 50km USA15th Germantown 50k 7:05:13 h65
16.05 100mi USA15th Massanutten Mountain Trails 100 Mile 33:51:31 h83
26.04 50km USA3rd John Bryan 50k 5:41:42 h13
22.02 71mi USA4th The Reverse Ring 71-mile Run 24:11:00 h11
2008
08.11 100mi USA1st Pinhoti 100 Mile 28:23:00 h47
19.10 50km USA6th Stone Steps 50K Trail Run 5:33:13 h14
06.09 71.1mi USA6th The Ring 71-mile Run 25:00:29 h11
23.08 50km USA14th Germantown 50k 6:06:14 h18
07.06 100mi USA7th San Diego 100 Mile Endurance Run 29:49:00 h36
17.05 100mi USA14th Massanutten Mountain Trails 100 Mile 32:37:55 h62
27.04 50km USA2nd John Bryan 50k 5:08:33 h5
08.03 50mi USA5th Land Between The Lakes 50 Mile Trail Run 9:53:35 h22
24.02 71mi USA3rd The Reverse Ring 71-mile Run 22:35:00 h4
2007
21.10 50km USA5th Stone Steps 50K Trail Run 5:30:50 h8
08.09 50km USA23rd Groundhog Fall 50K 5:33:00 h37
15.06 100mi USA16th Bighorn Mountain Wild & Scenic 100mi Trail Run 32:20:37 h53
25.02 71mi USA2nd The Reverse Ring 71-mile Run 24:23:00 h2 🥈
13.01 50km USA2nd Elizabeth's Furnace Fat Ass 50 km Race 7:44:00 h13
2006
22.10 50km USA4th Stone Steps 50K Trail Run 5:25:13 h6
16.09 100mi USA20th Angeles Crest 100 Mile 30:37:46 h54
16.06 70.5mi USA27th Laurel Highlands 70 Mile Ultra 15:46:18 h20
29.04 50km USA6th Promise Land 50K++ 7:22:55 h87
08.04 50mi USA14th Bull Run Run 50 Miler 10:31:49 h113
26.02 71mi USA1st The Reverse Ring 71-mile Run 25:29:00 h6
14.01 50km USA1st Elizabeth's Furnace Fat Ass 50 km Race 8:42:00 h6
2005
23.10 50km USA3rd Stone Steps 50K Trail Run 5:55:05 h4
08.10 71.1mi USA4th The Ring 71-mile Run 26:55:00 h9
05.02 100mi USA13th Rocky Raccoon 100 Mile Trail Run 23:10:10 h34
2004
18.12 50km USA8th Huff 50K Trail Run 5:24:12 h93
13.11 50mi USA12th Kentucky Arches 50 Mile 7:24:00 h16
24.10 50km USA2nd Stone Steps 50K Trail Run 6:58:25 h12
10.07 100mi USA11th Hardrock Hundred Endurance Run 45:39:30 h66
12.06 70.5mi USA25th Laurel Highlands 70 Mile Ultra 17:47:33 h25
20.03 50km USA8th Kentucky Ultra Trail Sojourn 50 km 6:36:58 h19
15.02 50km USA9th Holiday Lake 50K++ 6:04:31 h85
2003
13.12 100km USA1st Hellgate 100 km 18:41:56 h43
16.11 50km USA1st Stone Steps 50K Trail Run 6:14:05 h12
16.08 100mi USA21st Leadville Trail 100 Mile 28:57:28 h139
12.07 50km USA9th Rattlesnake Trail 50K Ultrarun 5:46:48 h17
14.06 70.5mi USA24th Laurel Highlands 70 Mile Ultra 18:44:53 h17
10.05 100mi USA9th Massanutten Mountain Trails 100 Mile 35:25:23 h68
15.03 50mi USA7th Kentucky Ultra Trail Sojourn 50 Miles 9:05:35 h7
25.01 50km USAWinter Buckeye Trail 50k 8:10:00 h7
2002
07.12 50km USA5th Snowflake 50K Trail Run 5:53:29 h46
19.10 50mi USA20th Mountain Masochist 50 Mile Trail Run 10:06:03 h92
07.09 50km USA18th Groundhog Fall 50K 5:31:05 h22
13.07 50km USA8th Rattlesnake Trail 50K Ultrarun 5:35:19 h28
27.04 50km USA2nd Promise Land 50K++ 7:06:10 h94