Krzysztof Michalski
Born : 1977 Cat. M45 Ultrarunner since 2014 POL
32
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
47
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 ?POLPolandSWESweden
49,0%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 1 122; Σ finishers = 2 292. 1 122 / 2 292 × 100 = 48.95%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed32
Km — ultra races2 956 km
> 100 km10
> 160 km3
> 200 km1
> 24h6
Longest race201,2 km

Km per year (ultra races)

536
6 races
2022
349
3 races
2023
215
3 races
2024
313
3 races
2025
452
4 races
2026

Race types (share of distance)

Road2,5%
Trail68,2%
Elim.24,5%
Ult.Walk4,8%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 38
🏅 Top 3 M9
Longest winning streak1
Current streak0

HISTORY

33 race(s)
DateRacePerf.Rk
2026
30.07 100km SWE7 Fjällmaraton 100k 15:43:33 h81
13.06 106km SWE6 The Alpaca Race 106 km 22:02:43 h12
02.05 Backyard Ultra SWE9 Trosa Backyard Ultra 201.180 km (30h)3 🥉
21.03 45km SWE26 Ursvik Ultra 45 km - Hårdingen 5:10:56 h10
2025
02.08 24h SWEWalking Dead Ultra 24H 142.840 km8
14.06 70km SWEJättelångt 70 km Trail 8:37:54 h18
04.04 Backyard Ultra SWE7 Tyresö Extreme Challenge (TEC) - Backyard 100.590 km (15h)2 🥈
2024
05.10 55km SWE23th Sörmland Ultra Marathon 5:06:35 h28
21.09 100km SWE1st Ultra Caballo Blanco Suecia - 100km 11:50:22 h2 🥈
14.09 Backyard Ultra SWEBE OUT! (Backyard Extreme Offroad Ultra Trail) 6:14:38 h3 🥉
2023
03.11 161km SWEKullamannen Ultra 100 miles 29:43:04 h355
23.09 50mi SWE4 Ultra Caballo Blanco Suecia 9:04:33 h4
02.09 Backyard Ultra SWE4. Big Shadow Backyard Ultra 107.296 km (16h)18
2022
04.11 103km SWEKullamannen Sprint Ultra 100 km 16:13:37 h116
17.09 50mi SWE3 Ultra Caballo Blanco Suecia 8:48:15 h3 🥉
03.09 Backyard Ultra SWE3. Big Shadow Backyard Ultra 107.296 km (16h)14
04.08 100km SWEFjällmaraton 100K 16:43:52 h52
23.04 6h SWEVXO Ultrafest - VXO24h - 6h split 50.089 km54
23.04 24h SWEVXO Ultrafest - VXO24h (Svenskt Mästerskap) 73.081 km86
15.01 72km SWE1. GotRun Winter Trail - Enkle 8:03:10 h11
2021
02.10 50mi SWE3 Ultra Caballo Blanco Suecia 8:55:51 h1 🏆
11.09 Backyard Ultra SWEBE OUT! (Backyard Extreme Offroad Ultra Trail) 5:45:32 h4
2020
03.10 50mi SWE3 Ultra Caballo Blanco Suecia 8:32:08 h6
2019
05.10 50mi SWE2 Ultra Caballo Blanco Suecia 9:28:07 h3 🥉
21.09 Backyard Ultra SWE1. Big Shadow Backyard Ultra 87.178 km (13h)30
13.07 102km POLUltra Chojnik (UCH) 102 km 17:36:07 h55
15.06 70km SWEJättelångt 70 km Trail 8:18:41 h20
30.05 46km SWEOttarsloppet Ultra 4:02:40 h2 🥈
2018
06.10 50mi SWEUltra Caballo Blanco Suecia 10:31:17 h6
16.06 80km SWE2nd EcoTrail Stockholm 80 km 12:40:36 h89
21.04 100mi SWE10th Täby Extreme Challenge 100 miles 28:24:46 h52
2015
18.01 82km SWESandsjöbacka Trail 12:04:49 h45
2014
20.09 50mi SWEBlack River Run 50 Miles 9:02:46 h15