Deadwater Dirty Duathlon
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Deadwater Dirty Duathlon
The Deadwater Dirty Duathlon is a winter run, mountain bike, run event at Kielder Castle in Northumberland on 22 November 2026. It can be contested solo or as a pair and combines trail running with a mountain bike lap over forest terrain.
Distances:
- Run 1: 10 km
- MTB: 12 km on red graded trails to the summit of Deadwater if weather permits
- Run 2: 7.5 km
The course is waymarked. The first run is led out by a bike and subsequent legs use different colour signs. GPX files will be available for each leg. Parts of the route cross areas that are closed to the public while other sections remain open; participants should be prepared to encounter members of the public on some sections.
Logistics include on site registration at Kielder Castle, a pay and display Forestry car park within walking distance, and public toilets across the road from the castle. Camping is not provided; vans and motorhomes may stay in the castle car park for a Forestry fee. A catering truck may be unavailable in winter. Water sources can freeze so participants are advised to carry their own supply.
Mandatory equipment includes a functioning mountain bike or gravel bike and a helmet; lack of either will result in disqualification. A medical team and course staff will be present. The event has no refunds or deferrals after 14 days but entries can be swapped with another person. Visit the organization's website for the most recent information.
