Derek Fox
Born : 1985 Cat. M40 Ultrarunner since 2014 USA
39
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
61
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
16,7%
Rank quotient ?This runner's calculation uses 39 eligible race(s): Σ(rank − 1) = 527; Σ finishers = 3 163. 527 / 3 163 × 100 = 16.66%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed39
Km — ultra races4 644 km
> 100 km19
> 160 km15
> 200 km6
> 24h12
> 48h5
Longest race241,4 km

Km per year (ultra races)

881
5 races
2022
678
5 races
2023
413
3 races
2024
463
3 races
2025
2026

Race types (share of distance)

Road17,1%
Trail49,6%
Elim.33,4%

Wins & podiums (ultra)

🏆 Win8
🏆 Win M8
🏅 Top 311
🏅 Top 3 M11
Longest winning streak3
Current streak0

HISTORY

39 race(s)
DateRacePerf.Rk
2025
11.10 24h USA7th Cape Fear 24 Hour Endurance Run 160.957 km7
24.05 Backyard Ultra USA6th Capital Backyard Ultra 221.298 km (33h)6
05.04 50mi USA30th Umstead Endurance Run 50 Miles 9:44:03 h8
2024
25.05 Backyard Ultra USA5th Capital Backyard Ultra 187.768 km (28h)8
06.04 100mi USA29th Umstead Endurance Run 100 Miles 19:24:18 h21
03.02 40mi USA32nd Uwharrie Mountain Run 8:31:25 h17
2023
14.10 24h USA5th Cape Fear 24 Hour Endurance Run 123.813 km25
19.08 12h USA5th One Mile With a Smile 12-Hour Run 107.972 km1 🏆
27.05 Backyard Ultra USA4th Capital Backyard Ultra 221.298 km (33h)12
01.04 100mi USA28th Umstead Endurance Run 100 Miles 20:04:33 h13
04.02 40mi USA31st Uwharrie Mountain Run 6:57:40 h1 🏆
2022
08.10 24h USA4th Cape Fear 24 Hour Endurance Run 206.672 km1 🏆
23.07 Backyard Ultra USA4th Ode to Laz Backyard Ultra 207.886 km (31h)3 🥉
28.05 Backyard Ultra USA3rd Capital Backyard Ultra 241.416 km (36h)14
02.04 100mi USA27th Umstead Endurance Run 100 Miles 17:39:08 h9
05.02 40mi USA30th Uwharrie Mountain Run 6:35:46 h3 🥉
2021
04.12 40mi USA3th Shakori 40 Mile Running Festival 5:37:24 h1 🏆
09.10 24h USA3rd Cape Fear 24 Hour Endurance Run 112.384 km21
29.05 Backyard Ultra USA2nd Capital Backyard Ultra 214.592 km (32h)11
27.03 50mi USA26th Umstead Endurance Run 50 Miles 7:33:28 h1 🏆
06.02 40mi USA29th Uwharrie Mountain Run 6:35:43 h1 🏆
2020
14.11 40mi USA2nd Shakori 40 Mile Running Festival 5:49:32 h1 🏆
01.08 Backyard Ultra USA1st Capital Backyard Ultra 67.060 km (10h)19
08.02 12h USA2nd MC Broken Ankle 12 Hour Run 94.790 km1 🏆
01.02 40mi USA28th Uwharrie Mountain Run 7:16:54 h5
2019
19.10 Backyard Ultra USA8th Big Dog's Backyard Ultra 187.768 km (28h)29
06.04 100mi USA25th Umstead Endurance Run 100 Miles 18:43:49 h14
02.02 40mi USA27th Uwharrie Mountain Run 7:47:50 h5
2018
01.09 71.1mi USA16th The Ring 71-mile Run 26:09:00 h26
08.04 50mi USA24th Umstead Endurance Run 50 Miles 8:45:16 h5
03.02 40mi USA26th Uwharrie Mountain Run 7:27:00 h12
2017
01.04 100mi USA23rd Umstead Endurance Run 100 Miles 19:24:39 h14
04.02 40mi USA25th Uwharrie Mountain Run 7:50:43 h11
2016
25.06 50mi USA3rd Dusk to Dawn 50 Miler 7:57:32 h2 🥈
02.04 100mi USA22nd Umstead Endurance Run 100 Miles 25:51:42 h95
06.02 40mi USA24th Uwharrie Mountain Run 7:56:39 h13
2015
07.02 40mi USA23rd Uwharrie Mountain Run 9:10:04 h33
2014
30.03 50km USA3rd Mountains to Sea Challenge 6:01:09 h41
01.02 40mi USA22nd Uwharrie Mountain Run 10:21:46 h56