Stefan Sons
ID 286322
Born : 1969 Cat. M55 Ultrarunner since 2012 GER
43
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
4
Countries visited ?BELBelgiumFRAFranceGERGermanyNEDNetherlands
47,3%
Rank quotient ?This runner's calculation uses 43 eligible race(s): Σ(rank − 1) = 2 580; Σ finishers = 5 454. 2 580 / 5 454 × 100 = 47.30%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed46
Km — ultra races3 133 km
> 100 km6
> 160 km1
> 24h1
Longest race170,0 km
8. Jurasteig Nonstop Ultratrail 170 km — 6/4/2018

Km per year (ultra races)

52
1 race
2022
80
1 race
2023
2024
2025
104
1 race
2026

Race types (share of distance)

Road14,1%
Trail67,6%
Stage10,2%
?8,2%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 33
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km4h32'59100 km11h57'3850 mi9h43'206 h55,10 km24 h81,73 km

HISTORY

44 race(s) · 4 stage(s) nested
DateRacePerf.Rk
2026
10.04 104km GER14 Jurasteig Nonstop Ultratrail 104 km (JUNUT) 16:38:18 h13
2023
18.02 80km GER19. Brocken-Challenge 11:08:00 h75
2022
14.05 6h GERBottroper Ultralauf Festival 6h 52.274 km22
2021
10.10 50km GER7. Tortura Todesberg Ultra 6:39:10 h7
25.09 73km GERWerratal-Ultratrail 10:56:00 h12
08.08 69km GER12. Allgäu Panorama Ultra Trail 9:56:24 h105
2019
11.08 69km GER11. Allgäu Panorama Ultra Trail 10:30:11 h144
02.03 50km GER50km Lahntallauf, Marburg 5:22:52 h74
19.01 50km GERLebensbogen Ultra 50 6:08:06 h5
05.01 62km GER2. Bach-Tal-Ultra (BaTalU) 7:35:00 h5
2018
24.11 66km GERHermann Nightrun Double (Teutoburger Wald) 9:00:00 h4
18.11 52km GERBaldeneysteig-Ultratrail 6:17:14 h11
21.10 50km GER5. Tortura Todesberg Ultra 6:29:02 h2 🥈
30.06 6h GER4. Bergischer 6 Stundenlauf 55.100 km17
19.05 85km GER10. Keufelskopf Ultra-Trail 14:03:20 h50
06.04 170km GER8. Jurasteig Nonstop Ultratrail 170 km 36:17:00 h36
18.01 50km GERLebensbogen Ultra 50 6:52:03 h4
06.01 62km GER1 Bach-Tal-Ultra (BaTalU) 8:59:00 h6
2017
29.10 63.3km GER17. Röntgenlauf 6:57:08 h105
05.03 6h NED22de Zes uurs ultraloop Stein 51.986 km35
2015
27.06 24h GER27 24-Stundenlauf in Reichenbach - offener Lauf 81.727 km143
23.05 85km GER7. Keufelskopf Ultra-Trail 13:52:58 h68
02.05 100km GER2. WHEW100 11:57:38 h30
15.03 50km GER2. Dragon Ultra Trail 6:50:00 h11
21.02 53km GER2. Jokertrail 53 km 7:15:00 h9
2014
22.11 106km GERkleiner KoBoLT, 106 km Rheinsteig Koblenz-Bonn 13:45:00 h1 🏆
08.11 50mi GERKein idyllischer Landschaftslauf 50mi (KILL50) 12:13:00 h25
26.10 63.3km GER14. Röntgenlauf 6:49:17 h126
20.07 50km GER1. Tortura Todesberg Ultra 6:55:53 h4
30–31.05 128km/2stages GER4. SH-Supertrail (Saar-Hunsrück) 18:40:00 h29
15.02 65km BELLe Trail des Bosses 65 km 8:27:30 h49
18.01 45km GER0211-KEU - Kleiner Einladungsultra 45 km 5:59:20 h13
2013
23.11 106km GERkleiner KoBoLT, 106 km Rheinsteig Koblenz-Bonn 16:04:00 h1 🏆
09.11 50mi GERKein idyllischer Landschaftslauf 50mi (KILL50) 11:30:05 h13
22.06 62km BEL5ème Trail des Vallées du Chevalier 8:05:24 h27
10–11.05 128km/2stages GER3. SH-Supertrail (Saar-Hunsrück) 17:21:00 h30
27.04 51km GER34. Harzquerung Wernigerode-Nordhausen 5:19:21 h158
16.03 80km FRA6ème Le Trail de Paris-Ile de France 80 km 9:43:20 h554
03.03 50km GER50km Lahntallauf, Marburg 4:32:59 h46
23.02 62km BELTrail de la Mazerine 62 km 7:34:00 h26
09.02 65km BELLe Trail des Bosses 65 km 8:30:58 h29
2012
28.10 63.3km GER12. Röntgenlauf 7:28:25 h252
19.05 62km GER2. SH-Supertrail (Saar-Hunsrück) - 2. Etappe Braunshausen - Trier 7:43:00 h11
28.04 51km GER33. Harzquerung Wernigerode-Nordhausen 6:06:48 h247