De Hel van Kasterlee – Winterduathlon
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Road runs in Belgium, Kasterlee
About
De Hel van Kasterlee is a legendary Belgian duathlon — the toughest winter duathlon in Europe. It features a 15 km run, a 125 km mountain bike ride over five laps, and a second 15 km run, challenging athletes against cold, mud, and each other.
Catering & aid stations
Warm and cold zones along the course; drink stations and basic first aid provided.
Pacers
Pacemakers will run and ride selected waves per the Renntag schedule; refer to wave times and pacer flags on event day for guidance.
Results
View official resultsTypical weather in Kasterlee
Monthly averages based on historical data (2000–present).
Jan6°1°
↑ 08:41
↓ 17:01
Feb7°2°
↑ 07:57
↓ 17:55
Mar11°3°
↑ 06:55
↓ 18:46
Apr15°5°
↑ 06:46
↓ 20:37
May18°9°
↑ 05:50
↓ 21:26
Jun21°13°
↑ 05:25
↓ 22:00
Jul23°14°
↑ 05:43
↓ 21:52
Aug22°14°
↑ 06:28
↓ 21:04
Sep20°12°
↑ 07:17
↓ 19:57
Oct15°9°
↑ 08:06
↓ 18:49
Nov10°5°
↑ 08:00
↓ 16:53
Dec7°2°
↑ 08:40
↓ 16:34
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Register on the official organiser website.
Sign up nowLast updated: Jun 6, 2026, 12:17:45 AM
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