The Northumbrian
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Trail Runs - The Northumbrian
The Trail Runs take place at Kielder Waterside Park on Saturday 27 June 2026. The 50K Ultra and 28K trail runs were introduced at the 2025 event and will run the day before the triathlon. Runners start at Kielder Waterside and follow a route that includes a 25 km loop incorporating the new Lonesome Pine trail and views of Kielder Water, then join the triathlon run loop for the final laps that pass through the event village and finish at the lake edge.
Distances offered:
- 50K Ultra : 48 km; 675 m ascent; entry fee £65
- 28K Trail : 27.6 km; 400 m ascent; entry fee £40
Cut-off times are set at intermediate points: 20 km - 4 hours; 30 km - 6 hours; finish for the 50 km - 10 hours. The event is a UTMB Index race for the corresponding categories and is licensed by the Trail Running Association; it will adhere to UK Athletics rules.
Runners must carry mandatory kit listed in the race information, including capacity to carry water (500 ml–1 L), a functioning head torch, suitable trail footwear, a waterproof jacket with hood, medical kit, re-usable cup, charged mobile phone, survival bag, food reserves, whistle and personal ID. The final kit list will be provided in the race pack.
Minimum ages apply: entrants must be at least 18 years old for the 28K and at least 20 years old for the 50K. Entries include an event T-shirt, electronic chip timing, on-course support and nutrition, and a medal with a registration goody-bag. Visit the organization's website for the most recent information.
