Sjaak Kuin
Born : 1974 Cat. M50 Ultrarunner since 2017 NED
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
51
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
17
Countries visited ?AUTAustriaBELBelgiumCROCroatiaESPSpainFINFinlandFRAFranceGERGermanyGREGreeceHUNHungaryITAItalyLUXLuxembourgMASMalaysiaNEDNetherlandsRUSRussiaSGPSingaporeSWESwedenTURTürkiye
65,7%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 8 117; Σ finishers = 12 362. 8 117 / 12 362 × 100 = 65.66%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races3 719 km
> 100 km18
> 160 km5
> 24h2
Longest race170,0 km

Km per year (ultra races)

441
4 races
2022
371
3 races
2023
516
7 races
2024
580
6 races
2025
428
4 races
2026

Race types (share of distance)

Road9,2%
Trail90,8%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0

HISTORY

41 race(s) · 4 split(s) nested
DateRacePerf.Rk
2026
28.08 101km ITA20ème Courmayeur-Champex-Chamonix 23:49:00 h946
15.05 166km BEL16° Grand Trail des Lacs et Châteaux 100 Miles 35:51:05 h159
11.04 111.4km CRO14th Istria 100 by UTMB - 110K 21:29:13 h311
31.01 50km NED7th Drielandenpunt Winter Trail 5:42:46 h65
2025
20.12 50km BELMeerdaalwoud Trail 4:38:52 h43
01.11 102km ESPMallorca by UTMB - Camins de Pedra Seca 20:46:26 h477
12.09 111km LUX9ème Leopard Ultratrail du Mullerthal (UTML) - Ultratrail 111km 20:10:57 h51
09.08 73km BEL14ème Trail des Fantomes 73km 11:37:42 h85
23.05 83km FIN12 NUTS Karhunkierros 83km Trail Ultra 17:35:10 h481
03.05 24h NED4. 24hrs Sittard 161.131 km25
2024
21.12 133km FRALa H.O.T. du Père Noël 24:08:36 h84
22.09 67km BELL'Ultra by HuyForTrail 8:38:43 h24
10.08 48km BEL13ème Trail des Fantomes 48km 7:03:57 h63
29.06 56km AUT6. Kaiserkrone Marathon Trail 12:41:17 h65
08.06 50km BEL1st The Longest Day 50km 5:51:41 h64
19.05 112km HUNUltra-Trail Hungary 112 km 19:38:57 h161
28.01 50km NEDLeenderbos Ultra Trail 4:31:30 h6
2023
16.12 100mi BELThe Bello Gallico Trail 100mi 26:47:00 h95
30.09 101km SGP11th Craze Ultra 101 km 17:20:57 h4
02.09 109km MAS11th The Most Beautiful Thing (TMBT) 100 km Ultra Trail Marathon 23:14:31 h35
2022
26.08 170km FRA19ème Ultra Trail Tour du Mont Blanc 45:54:28 h1697
18.06 108km AUT10. mozart 100 18:32:49 h331
07.05 110km GRECorfu Mountain Trail 24:12:01 h37
23.01 53km BELHouffatrail 53km 7:00:24 h123
2021
05.11 169km SWEKullamannen Ultra 100 miles 31:32:53 h293
27.08 101km ITA15ème Courmayeur-Champex-Chamonix 22:21:09 h910
01.08 76km GERLosheimer Trailfest 11:37:28 h27
13.06 50km BELThe Longest Day 7:19:04 h88
2020
12.09 108km AUTInnsbruck Alpine Trailrun Festival K110 21:47:34 h134
22.02 24h BELPiseach! M&M 2-daagse - 24h 79.709 km45
2019
26.10 100km BEL8th Bear Trail 100 km 15:13:54 h81
13.07 47km BELLa Chouffe Trail 47km 5:49:09 h57
30.03 55km BEL8ème Trail des Crêtes de Spa 5:46:05 h61
2018
18.11 52km LUX16. Trail Uewersauer 5:47:59 h81
20.10 119km TUR5th Cappadocia 119 km Ultra-Trail 20:39:18 h130
22.07 100km RUSGolden Ring 100 km Ultra Trail 15:45:23 h211
10.06 62.5km BELTrail Transcollines 7:33:40 h19
12.05 100km MAS4th Ultimate Trails Of Penang Eco 100 km 23:55:46 h32
20.01 45km BELBossen van Vlaanderen Trail 4:56:26 h94
2017
26.11 70km BEL22ème Olne-Spa-Olne 9:21:34 h298
13.08 48km BEL8ème Trail des Fantomes 48 km 8:21:43 h165