Juhana Kirk
ID 712412
Born : 1984 Cat. M40 Ultrarunner since 2015 FIN
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
46
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
3
Countries visited ?FINFinlandGBRUnited KingdomPORPortugal
5,2%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 253; Σ finishers = 4 860. 253 / 4 860 × 100 = 5.21%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 668 km
> 100 km6
> 160 km4
> 200 km2
Longest race431,3 km
11th Spine Race — 15/1/2023

Km per year (ultra races)

339
2 races
2022
520
2 races
2023
485
5 races
2024
165
2 races
2025
80
1 race
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win7
🏆 Win M7
🏅 Top 310
🏅 Top 3 M10
Longest winning streak2
Current streak0

Records

50 km3h57'18100 km9h16'2750 mi7h42'28100 mi20h16'41

HISTORY

25 race(s)
DateRacePerf.Rk
2026
07.02 50mi GBRHibernal Hills 50 Miles 8:17:40 h2 🥈
2025
22.11 51mi GBRCopthorne 50mi 8:51:30 h1 🏆
23.05 83km FIN12 NUTS Karhunkierros 83km Trail Ultra 10:36:51 h23
2024
07.12 55mi GBRWinter on the Downs 55 Mile 8:03:03 h2 🥈
06.07 100km GBRSerpent Trail Race 100km 9:16:27 h1 🏆
27.04 116km POR15. MIUT - Madeira Island Ultra Trail 115 km 19:13:35 h81
06.04 100km GBR4th Lakes Traverse 100km 12:11:44 h1 🏆
27.01 50mi GBR6th The Arc of Attrition 50 Mile 9:53:09 h18
2023
02.12 55mi GBRWinter on the Downs 55 Mile 9:06:07 h4
15.01 268mi GBR11th Spine Race 4d 08:02:59 h9
2022
12.06 50km GBR8th Weald Challenge 3:57:18 h1 🏆
02.04 289km GBR3rd Northern Traverse 300km 2d 03:49:52 h5
2020
08.08 103mi GBR10th North Downs Way 100 Mile Race 19:33:27 h1 🏆
2019
23.11 124.3km GBRHardwolds 80 15:25:32 h1 🏆
28.09 52km GBRSnowdon Trail Running Challenge 8:04:34 h5
18.05 50mi GBR9th North Downs Way 50 Mile Race 7:56:07 h13
2018
10.06 50km GBR5th Weald Challenge 4:04:25 h1 🏆
2017
25.11 50mi GBR2nd Wendover Woods 50 8:44:48 h10
10.06 100mi GBR6th South Downs Way 100 Mile Race 20:16:41 h24
08.04 50mi GBR5th South Downs Way 50 Mile Race 7:42:28 h15
2016
25.09 50km GBRHigh Weald Challenge 5:03:00 h12
29.05 50km GBR3rd Weald Challenge 4:14:10 h2 🥈
09.04 50mi GBR4th South Downs Way 50 Mile Race 7:42:35 h15
19.03 33.7mi GBRCoastal Trail Series - Sussex Ultra 5:15:56 h5
2015
09.08 50km GBRSalisbury 54321 Trail Races 4:35:00 h26