Jason Stobbs
ID 355366
Born : 1974 Cat. M50 Ultrarunner since 2012 GBR
46
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
54
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 ?GBRUnited KingdomROURomania
61,1%
Rank quotient ?This runner's calculation uses 47 eligible race(s): Σ(rank − 1) = 5 284; Σ finishers = 8 655. 5 284 / 8 655 × 100 = 61.05%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed54
Km — ultra races4 388 km
> 100 km9
> 160 km8
> 200 km4
Longest race380,0 km
10th Dragon's Back Race — 1/9/2025

Km per year (ultra races)

335
5 races
2022
472
3 races
2023
321
4 races
2024
798
4 races
2025
418
5 races
2026

Race types (share of distance)

Trail86,4%
Stage13,6%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km8h26'4150 mi11h58'57100 mi32h53'35

HISTORY

47 race(s)
DateRacePerf.Rk
2026
20.06 50mi GBRUltra Wales 50 14:22:45 h162
06.06 40mi GBRThe Vogum - Vale of Glamorgan Ultra Marathon 11:36:00 h137
02.05 30mi GBRThe Howum - Heart of Wales Ultra Marathon 8:48:00 h205
04.04 32mi GBRThe Bowum - Borderlands of Wales Ultra Marathon 9:19:00 h253
10.01 108mi GBR14th Winter Spine Challenger South 2d 03:05:30 h50
2025
01.09 380km/6stages GBR10th Dragon's Back Race 3d 16:58:29 h90
21.06 50mi GBRUltra Wales 50 15:07:58 h130
03.05 50mi GBR8th Pennine Barrier Ultra 50 12:12:19 h184
13.01 160mi GBR4th Winter Spine Challenger North 3d 09:56:51 h30
2024
12.10 51km GBRLadybower Reservoir 50k Ultra 8:59:43 h736
07.09 30mi GBRThe Ridum - Ridgeway Ultra Marathon 9:22:00 h187
04.05 30mi GBRThe Howum - Heart of Wales Ultra Marathon 8:20:00 h148
13.01 108mi GBR12th Winter Spine Challenger South 2d 04:45:29 h73
2023
25.11 80mi GBRHardwolds 80 22:02:28 h46
15.07 54km GBRMaverick X Series Chilterns 8:20:39 h109
01.04 289km GBR4th Northern Traverse 300km 3d 18:39:15 h45
2022
15.10 50km GBRLadybower Reservoir 50k Ultra 8:35:45 h212
25.06 50mi GBR4th Ultra Trail Wales 13:46:18 h13
28.05 80.9km ROUTransylvania One Hundred - 80km Thunder Run 22:39:44 h46
30.04 37mi GBRMalvern Hills Ultra 37 Miles 10:29:00 h5
26.02 40mi GBRWinter Wychavon Way 9:46:59 h50
2021
16.10 34mi GBRGower Ultra Bach 34 miles 10:09:01 h56
26.06 50km GBRMaverick Frontier Chilterns 9:19:08 h98
17.04 50km GBR3rd Hurtwood 50k Endurance Trail Run 8:26:41 h247
2020
25.01 40mi GBRWinter Wychavon Way 9:44:22 h70
2019
26.01 40mi GBRWinter Wychavon Way 7:43:20 h43
2018
27.10 49km GBRExmoor Ultra 50K 5:53:57 h14
01.09 50mi GBRDartmoor 50 Trail Race 13:10:10 h24
05.05 45mi GBRMalvern Hills Ultra 45 Miles 12:54:46 h31
27.01 40mi GBRWinter Wychavon Way 7:38:06 h24
2017
03.09 35mi GBRGritstone Grind 35 Miles 7:59:59 h86
28.07 50mi GBRLakeland 50 Mile 20:02:10 h624
06.05 29mi GBRMalvern Hills Ultra 29 Miles 10:02:23 h31
2016
29.07 100mi GBRLakeland 100 Mile 37:47:34 h165
14.05 50mi GBR3rd Apocalypse 50 Mile 11:58:57 h16
07.05 34mi GBRMalvern Hills Ultra 34 Miles 6:43:57 h2 🥈
2015
04.09 135mi/3stages GBR4th Ring O' Fire - Anglesey 135 Mile Ultra Coastal Marathon 35:25:37 h29
16.05 100mi GBR2nd Apocalypse 100 Mile 32:53:35 h37
19.04 40mi GBRWychavon Way 6:41:56 h10
01.03 41mi GBR2nd The Millennium Way 6:46:51 h27
2014
25.07 50mi GBRLakeland 50 Mile 12:29:17 h131
26.04 53mi GBR9th Highland Fling Race 53 Mile 12:08:46 h326
18.01 32mi GBRCoastal Trail Series - Anglesey Ultra 7:13:48 h46
2013
26.07 50mi GBRLakeland 50 Mile 12:23:50 h115
21.04 44.5mi GBREvesham Ultra 9:12:54 h25
2012
15.09 40mi GBR26th High Peak 40 Mile Challenge 8:42:00 h90
23.06 44mi GBR6th Cornwall Classic Quarter Ultra Marathon 9:43:49 h53