Brett Mumford
ID 166184
Born : 1970 Cat. M55 Ultrarunner since 2010 USA
36
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
1
Countries visited ?USAUnited States
53,0%
Rank quotient ?This runner's calculation uses 36 eligible race(s): Σ(rank − 1) = 3 499; Σ finishers = 6 604. 3 499 / 6 604 × 100 = 52.98%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed36
Km — ultra races2 482 km
> 100 km4
> 160 km4
Longest race160,9 km
15th Idaho Mountain Trail Ultra Festival (IMTUF 100) — 19/9/2026

Km per year (ultra races)

291
3 races
2022
291
3 races
2023
211
2 races
2024
185
3 races
2025
266
3 races
2026

Race types (share of distance)

Trail100,0%

Records

50 km5h40'2050 mi11h41'18100 mi33h28'00

HISTORY

36 race(s)
DateRacePerf.Rk
2026
19.09 100mi USA15th Idaho Mountain Trail Ultra Festival (IMTUF 100) 35:44:43 h107
13.06 50km USA39th McKenzie River 50 km Trail Run 6:55:11 h109
21.03 55km USA5th Owyhee Off-Road 55 km Challenge 7:44:18 h23
2025
12.07 50km USA12th McCall Trailrunning Classic 50 km 9:51:07 h27
07.06 50mi USA12th Scout Mountain 50 Miles Ultra Trail 17:24:01 h61
22.03 55km USA4th Owyhee Off-Road 55 km Challenge 8:09:03 h34
2024
21.09 100mi USA13th Idaho Mountain Trail Ultra Festival (IMTUF 100) 33:28:00 h83
08.06 50km USA37th McKenzie River 50 km Trail Run 5:51:21 h52
2023
16.09 100mi USA12th Idaho Mountain Trail Ultra Festival (IMTUF 100) 34:12:23 h83
10.06 50km USA36th McKenzie River 50 km Trail Run 6:28:45 h114
03.06 50mi USA10th Scout Mountain 50 Miles Ultra Trail 15:12:48 h43
2022
10.09 100mi USA11th Idaho Mountain Trail Ultra Festival (IMTUF 100) 34:42:12 h52
18.06 50km USA35th McKenzie River 50 km Trail Run 6:30:01 h109
04.06 50mi USA9th Scout Mountain 50 Miles Ultra Trail 15:40:24 h69
2021
12.06 50mi USA25th Snow Peaks 50 Mile Trail Run 13:19:37 h113
13.02 55km USA15th Moab Red Hot 55k 7:05:56 h79
2020
13.06 50mi USA24th Snow Peaks 50 Mile Trail Run 13:38:23 h122
2019
16.11 50mi USA13th Endurance Challenge - California Trail 50 Mile 11:41:18 h244
07.09 50km USA32nd McKenzie River 50 km Trail Run 6:56:12 h97
2018
15.09 50mi USA11th Endurance Challenge - Wisconsin Trail 50 Miles 11:45:33 h86
11.08 55km USA4th Skyline Mountain Marathon 55K 8:36:22 h19
17.02 55km USA12th Moab Red Hot 55k 7:33:33 h158
2017
23.09 50km USA4th Endurance Challenge - Utah Trail 50 km 6:57:08 h66
2016
24.09 50km USA3rd Endurance Challenge - Utah Trail 50 km 5:53:49 h79
2014
06.12 50km USA8th Endurance Challenge - California Trail 50 km 6:38:35 h258
05.10 50km USA1st Endurance Challenge - Utah Trail 50 km 6:40:01 h54
2013
07.12 50km USA7th Endurance Challenge - California Trail 50 km 7:01:12 h201
07.09 50km USA26th McKenzie River 50 km Trail Run 5:40:20 h62
04.05 50km USA6th Endurance Challenge - New York Trail 50 km 6:52:27 h108
2012
13.10 50km USA3rd Endurance Challenge - Georgia Trail 50 km 8:02:41 h81
02.06 50km USA5th Endurance Challenge - Washington D.C. Trail 50 km 6:36:33 h179
2011
03.12 50km USA5th Endurance Challenge - California Trail 50 km 6:46:31 h171
17.09 50km USA4th Endurance Challenge - Wisconsin Trail 50 km 6:13:03 h124
07.05 50km USA4th Endurance Challenge - New York Trail 50 km 7:12:23 h109
2010
04.12 50km USA4th Endurance Challenge - California Trail 50 km 7:04:25 h131
16.10 50km USA1st Endurance Challenge - Georgia Trail 50 km 6:38:21 h28