Jiri Krejci
ID 5532
Born : 1966 Cat. M60 Ultrarunner since 2000 CZE
37
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
12
Countries visited ?AUTAustriaBELBelgiumCZECzechiaFRAFranceGERGermanyITAItalyKORSouth KoreaNEDNetherlandsRUSRussiaSLOSloveniaSUISwitzerlandTPETaiwan
8,0%
Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 1 066; Σ finishers = 13 356. 1 066 / 13 356 × 100 = 7.98%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42
Km — ultra races4 461 km
> 100 km10
> 160 km7
> 200 km3
> 24h8
> 48h1
Longest race346,0 km
7. Brno Spring 48 Hour Indoor — 22/3/2002

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road80,0%
Trail12,3%
?7,8%

Wins & podiums (ultra)

🏆 Win7
🏆 Win M7
🏅 Top 39
🏅 Top 3 M10
Longest winning streak2
Current streak0

Records

50 km3h26'28100 km7h26'1412 h142,75 km24 h243,63 km48 h346,01 km

HISTORY

51 race(s) · 9 split(s) nested
DateRacePerf.Rk
2013
13.04 50km CZE50 km Marathon Mnisek pod Brdy 4:03:32 h15
2008
25.10 50km GER18. Schwäbische Alb Marathon 4:14:08 h50
09.08 24h CZESelf-Transcendence Race, 24h Kladno 106.000 km26
17.05 72.7km GER36. GutsMuths-Rennsteiglauf 5:44:35 h7
05.04 50km CZE50 km Marathon Mnisek pod Brdy 3:35:02 h1 🏆
2007
08.09 100km NEDIAU 100km EC (RUN Winschoten 100 km) 7:48:50 h36
08.09 100km NEDIAU 100km WC (RUN Winschoten 100 km) 7:48:50 h49
08.09 50km NED32. RUN Winschoten 100 km - 50km Split 3:45:20 h73
08.09 100km NED32. RUN Winschoten 100 km 7:48:50 h57
15.06 100km SUI49. 100 km Lauf Biel 8:14:52 h17
14.04 50km CZE50 km Marathon Mnisek pod Brdy 3:32:45 h4
2006
21.10 50km GER16. Schwäbische Alb Marathon 3:44:40 h4
08.10 50km KORIAU 100km WC Misari/Seoul - 50km Split 3:49:24 h54
08.10 100km KORIAU 100km WC Misari/Seoul 8:02:30 h53
17.09 53km AUTWachau Ultramarathon 3:34:00 h3 🥉
02.09 75km SLO75 km Celje-Logarska Dolina 5:44:34 h2 🥈
12.08 50km GER17. Leipziger 100 km Lauf am Auensee - 50 km Split 3:32:24 h1 🏆
12.08 100km GER17. Leipziger 100 km Lauf am Auensee 7:42:43 h1 🏆
25.04 50km ITA25^ 50 km di Romagna 3:59:04 h72
08.04 50km CZE50 km Marathon Mnisek pod Brdy 3:26:28 h1 🏆
2005
08.10 100km CZEBreclav 7:28:50 h1 🏆
16.07 24h AUTIAU 24h EC Wörschach 197.864 km50
16.07 24h AUTIAU 24h WC Wörschach 197.864 km69
08.05 12h SUI17. Self-Transcendence 12h Lauf Basel 142.750 km1 🏆
25.04 49.2km ITA24^ 50 km di Romagna 3:24:39 h20
2004
23.10 6h CZEOpen race at IAU 24h WC & EC Brno - 6h Split 65.105 km3 🥉
23.10 12h CZEOpen race at IAU 24h WC & EC Brno - 12h Split 118.003 km5
23.10 24h CZEOpen race at IAU 24h WC & EC Brno 178.045 km7
2003
16.11 100km TPEIAU 100km WC Taipei 9:21:23 h60
02.08 12h CZESelf-Transcendence Race, 24h Kladno - 12h Split 126.000 km1 🏆
02.08 24h CZESelf-Transcendence Race, 24h Kladno 243.634 km1 🏆
24.05 100km ITA31^ 100 km del Passatore, Firenze-Faenza 8:16:14 h11
25.04 49.2km ITA22^ 50 km di Romagna 3:42:24 h52
19.04 50mi RUSOpen Race at IAU 100km EC Chernogolovka - 50mi Split 6:33:57 h37
19.04 50km RUSOpen Race at IAU 100km EC Chernogolovka - 50km Split 3:28:08 h33
19.04 100km RUSOpen Race at IAU 100km EC Chernogolovka 7:26:14 h38
19.04 100km RUSIAU 100km EC Chernogolovka 7:26:14 h29
2002
20.10 100km NED100 km ultraloop Stein 7:54:42 h6
07.09 24h FRAIAU 24h EC Gravigny 196.082 km33
21.06 100km BELIAU 100km WC Torhout (23. Nacht van Vlaanderen) 7:41:00 h39
25.05 100km ITA30^ 100 km del Passatore, Firenze-Faenza 7:57:27 h8
25.04 49.2km ITA21^ 50 km di Romagna 3:18:28 h16
22.03 48h CZE7. Brno Spring 48 Hour Indoor 346.010 km5
2001
22.09 24h ITAIAU 24h WC Verona (7^ Lupatotissima 24 ore) 233.578 km10
22.09 12h ITAIAU 24h WC Verona (7^ Lupatotissima 24 ore) - 12h Split 132.508 km15
26.08 100km FRAIAU 100km WC Cleder - Open race 7:47:57 h77
26.08 100km FRAIAU 100km WC Cleder 7:47:57 h58
24.06 53km ITA26a Pistoia-Abetone Ultramarathon 4:19:08 h24
26.05 100km ITA29^ 100 km del Passatore, Firenze-Faenza 9:49:08 h62
25.04 49.2km ITA20^ 50 km di Romagna 3:35:49 h32
2000
07.10 12h CZE6. Self-Transcendence 12 h race Prag 118.942 km1 🏆