Jan Brenk
ID 741533
Born : 1972 Cat. M50 Ultrarunner since 2015 CZE
31
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
49
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
6
Countries visited ?CROCroatiaCZECzechiaGBRUnited KingdomITAItalyJPNJapanUSAUnited States
17,4%
Rank quotient ?This runner's calculation uses 31 eligible race(s): Σ(rank − 1) = 1 539; Σ finishers = 8 852. 1 539 / 8 852 × 100 = 17.39%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed31
Km — ultra races2 743 km
> 100 km7
> 160 km4
Longest race168,0 km
7th 100 Miles of Istria — 12/4/2019

Km per year (ultra races)

2022
2023
110
2 races
2024
2025
2026

Race types (share of distance)

Road18,9%
Trail81,1%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M3
Longest winning streak0
Current streak0

Records

50 km3h52'01100 km9h13'3250 mi8h40'11100 mi17h47'036 h59,51 km

HISTORY

31 race(s)
DateRacePerf.Rk
2024
31.08 6h USA19th Badgerland F/X 6 Hour Run (day) 59.505 km2 🥈
20.04 50km USA13th Earth Day 50k 5:39:56 h20
2021
07.08 50km CZEKrkonošská 50 5:30:18 h32
12.06 32.4mi GBREndurancelife CTS - Exmoor Ultra 5:56:50 h12
2020
05.09 100km CZEBaroko ultra 100 km 11:21:33 h15
06.06 66.6km CZEČertovskej Ultratrail 7:04:56 h20
2019
28.09 54.3km GBRCoastal Trail Series - North York Moors 5:28:05 h4
14.09 50km GBRDartmoor Ultra Marathon 5:50:46 h6
28.08 145km ITA10ème Sur les Traces des Ducs de Savoie 31:36:48 h256
10.08 70km CZE8. Hostýnská osma 8:10:25 h27
04.05 100mi GBR8th Thames Path 100 17:47:03 h11
27.04 35mi GBRCoastal Trail Series - Pembrokeshire Ultra 5:17:01 h3 🥉
12.04 168km CRO7th 100 Miles of Istria 27:59:21 h60
16.03 34.1mi GBRCoastal Trail Series - Sussex Ultra 5:30:58 h10
10.02 70km GBRBrecon to Cardiff Ultra 6:54:07 h27
2018
24.11 124.3km GBRHardwolds 80 15:24:16 h12
10.11 35.3mi GBRCoastal Trail Series - Gower Ultra 5:38:05 h19
20.10 33mi GBRCoastal Trail Series - Suffolk Ultra 4:55:57 h8
25.08 50km CZEBěhej Lesy Jizerská 50 km 3:52:01 h14
04.08 50km CZEKrkonosska padesatka 2018 6:19:48 h43
23.06 100mi GBRPennine Barrier Ultra 100 27:37:00 h6
19.05 50mi GBR8th North Downs Way 50 Mile Race 8:40:11 h20
28.04 100mi GBRLiverpool to Manchester (L2M) Double Ultra 19:40:00 h4
24.03 100km CZEBěhu na 100 km Pilsen 9:13:32 h24
2017
25.11 50mi GBR2nd Wendover Woods 50 9:43:05 h25
02.09 100km CZEBaroko ultra 100 km 11:51:43 h10
02.07 100km JPN1st Nikko 100km Ultramarathon 10:13:44 h86
23.04 118km JPN27th Fuji 5 Lakes 118 km Challenge 13:40:18 h196
2016
18.09 100km JPN16th Tango 100 km Ultramarathon 11:43:59 h318
17.06 100km CZEKrakonosova Stovka 100 km 17:06:19 h182
2015
13.09 100km JPN3rd 100 km Ultramarathon Hakusan-Shirakawago 10:56:22 h98