TRAIL32K21K11K
Boscross/trailrun-marathon
Diever, Netherlands25th editionChoose the distanceTap a distance: the course, fees, times and rules below update for that race.
Multiple laps
At a glance
Boscross/trailrun-marathon 2026 takes place on 12 December 2026 in Diever, Netherlands. Distances: 42.2 km, 31.6 km, 21.1 km, 10.5 km. Start at 11:00 from Groepsaccommodatie «Het Kasteel», Kasteel 19, Diever.
- Date
- Saturday, 12 December 2026
- Location
- Diever, Netherlands
- Start
- Groepsaccommodatie «Het Kasteel», Kasteel 19, Diever
- Finish
- Groepsaccommodatie «Het Kasteel», Diever
- Distances
- Maratona trail · 42.2 km · Competitive
- 31,6 km · Competitive
- Mezza maratona trail · 21.1 km · Competitive
- 10,5 km · Competitive
- Start times
- 11:00
- Entry fees
- Maratona trail €20 · 31,6 km €16.50 · Mezza maratona trail €14 · 10,5 km €8.50
- Registration
- Registration open until 9 December 2026 · Register now ↗
- Organiser
- Stichting Sport Promotie Diever ↗
- Official website
- sportpromotiediever.nl ↗
- Edition
- 25th edition
Last updated: 19 October 2026
The race
The 25th Boscross/trailrun-marathon in Diever, Drenthe, takes place on Saturday 12 December 2026 on the forest trails around the village.
The renewed, slightly hillier course is run over 1 to 4 laps, for 10.5, 21.1, 31.6 or 42.2 km. The start is at 11:00 from the "Het Kasteel" group accommodation (Kasteel 19), with a 5-hour limit and three drink stations. Advance fees range from 8.50 to 20 euros.
Entry fees
Maratona trailEUR
- Until 9 December 2026Now€20
- Final feedopo il 9 dicembre€22.50
Rules and requirements
Time limit5 h
RefundsCancellandosi entro l'8 dicembre la quota viene restituita, meno 1 euro di spese.
Where it is
Diever · Netherlands© OpenStreetMap · OpenFreeMap
Race-day weather
12 DEC 2026 · average of the last 10 years (2016–2025)Changeable weather
Temperature on race day
2°● At the start 5°6°
Low / high2° / 6°At the start (11:00): 5°
Rain2 mmRain on 37% of days
Wind22 km/h
Sunrise08:38