James Doyle
ID 408938
Born : 1969 Cat. M55 Ultrarunner since 2013 USA
48
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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 ?CANCanadaUSAUnited States
69,6%
Rank quotient ?This runner's calculation uses 51 eligible race(s): Σ(rank − 1) = 4 989; Σ finishers = 7 171. 4 989 / 7 171 × 100 = 69.57%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed52
Km — ultra races3 582 km
> 100 km3
> 160 km1
Longest race160,9 km
13th Javelina Jundred 100 Mile Endurance Run — 31/10/2015

Km per year (ultra races)

2022
261
4 races
2023
211
4 races
2024
190
3 races
2025
61
1 race
2026

Race types (share of distance)

Road2,8%
Trail93,6%
Stage3,6%

Records

50 km5h08'43100 km14h28'0950 mi10h29'58100 mi29h35'426 h48,73 km

HISTORY

51 race(s)
DateRacePerf.Rk
2026
13.06 38mi USA31st Kettle Moraine 38 Mile Night Run 9:08:58 h14
2025
06.09 50mi USA35th Superior Fall Trail Races 50 Mile 16:32:44 h135
14.06 38mi USA30th Kettle Moraine 38 Mile Night Run 9:00:15 h9
12.01 6h USA4th Winter 6 Hour Challenge Cross Country 48.730 km7
2024
19.10 50km USA3rd SAMO Trail Runs 9:24:11 h61
08.06 50km USA3rd Malibu Canyon Trail Races (SAMO 50 km) 8:57:00 h84
08.06 38mi USA29th Kettle Moraine 38 Mile Night Run 9:17:47 h16
20.04 50km USA31st Leona Divide 50 km Run 10:42:34 h107
2023
28.10 50mi USA2nd SAMO Trail Runs 13:52:14 h39
19.08 50km USA32th Bulldog 50k Ultra Run 7:42:31 h138
13.05 50mi USA42th Ice Age Trail 50 Mile Run 11:32:20 h228
23.04 50km USA30th Leona Divide 50 km Run 10:00:47 h81
2019
14.09 50mi USA12th Endurance Challenge - Wisconsin Trail 50 Miles 10:29:58 h64
28.04 130km USA7th Badwater Salton Sea 25:31:18 h54
2018
10.11 50km USA6th Paleozoic Trail Runs - Ordovician Fall 50K 5:13:58 h8
14.07 50mi USA15th Dances with Dirt - Devil's Lake 50M Ultra 11:10:18 h20
14.04 50km USA26th Leona Divide 50 km Run 8:30:14 h146
03.02 50km USA5th Sean O'Brien 50 km Trail Race 13:16:27 h182
2017
02.12 50mi USA5th Ray Miller 50 Mile Trail Race 14:52:00 h112
26.08 50km USA26th Bulldog 50k Ultra Run 8:18:04 h105
20.08 50km CAN6th Squamish 50km 9:56:51 h253
19.08 50mi CAN6th Squamish 50mi 12:47:02 h132
19.08 130km/2stages CAN6th Squamish 50-50 22:43:53 h48
22.04 50km USA25th Leona Divide 50 km Run 10:36:39 h237
09.04 100km USA7th Gorge Waterfalls 100k 16:24:01 h173
2016
08.10 100km USA2nd Bigfoot 100km Endurance Run 24:23:12 h34
09.07 50km USA11th Angeles National Forest 50k Trail Race 10:13:25 h87
14.05 50mi USA35th Ice Age Trail 50 Mile Run 10:34:52 h142
08.04 100km USA5th The Zion 100 km Run 18:06:09 h60
26.03 50km USA4th Paleozoic Trail Runs - Silurian Spring 50K 5:40:01 h26
06.02 50km USA3rd Sean O'Brien 50 km Trail Race 9:36:27 h117
2015
31.10 100mi USA13th Javelina Jundred 100 Mile Endurance Run 29:35:42 h274
22.08 50km USA24th Bulldog 50k Ultra Run 7:20:02 h172
11.07 50mi USA12th Dances with Dirt - Devil's Lake 50M Ultra 11:56:26 h33
11.07 50km USA10th Angeles National Forest 50k Trail Race 9:18:02 h81
09.05 50mi USA12th Dances with Dirt - Gnaw Bone 50 Mile Ultra 11:46:39 h13
25.04 50mi USA23rd Leona Divide 50 Mile Run 12:48:51 h104
21.03 50km USA16th Chicago Lakefront Spring 50km Race 5:25:04 h75
07.02 50mi USA2nd Sean O'Brien 50 Mile Trail Race 14:10:11 h93
2014
01.11 100km USA12th Javelina Jundred 100 km Endurance Run 15:36:27 h41
23.08 50km USA23rd Bulldog 50k Ultra Run 7:45:15 h160
12.07 50mi USA11th Dances with Dirt - Devil's Lake 50M Ultra 10:44:03 h31
07.06 38mi USA19th Kettle Moraine 38 Mile Fun Run 7:52:36 h12
03.05 100km USA19th Miwok 100k Trail Race 14:28:09 h226
26.04 50km USA22nd Leona Divide 50 km Run 8:01:15 h111
11.01 50mi USA34th Avalon Benefit 50-Mile Run 13:09:00 h264
2013
01.12 50km USA27th OTHTC High Desert 50K Ultra 7:22:23 h190
15.09 50km USA6th Endurance Challenge - Wisconsin Trail 50 km 5:08:43 h48
01.06 38mi USA18th Kettle Moraine 38 Mile Fun Run 8:14:50 h13
11.05 50mi USA10th Dances with Dirt - Gnaw Bone 50 Mile Ultra 10:41:48 h19
27.04 50km USA21st Leona Divide 50 km Run 9:27:19 h161