Kielder Marathon Weekend
Yarrow, United Kingdom • 3-4 Oct 2026
Altra Kielder Marathon Weekend
The Altra Kielder Marathon Weekend is a multi day running event held in early October 2026 at Kielder Forest Park in Northumberland. The marathon route follows an almost entirely off road course around Kielder Water, northern Europe’s largest man made lake.
The weekend programme includes the following events:
- Marathon around Kielder Water
- Half Marathon
- 10K
- Gravel Duathlon individual and team options
- Junior races for younger runners
Event services and notes listed for participants include a medal and goody bag for all finishers, a free Park & Ride system for runners, and spectator passes priced at £3 with shuttle buses to multiple vantage points. There is a secure baggage drop, local produce and refreshments available, and prizes for the top three male and female finishers plus first in V40, V50 and V60 categories. Entry fees shown for 2026 include Marathon £45, Half Marathon £39, 10K £27.50, Gravel Duathlon £60 individual or £83 team, and Junior races £8; a £2 discount applies for UKA club members. The event is based at Kielder Forest Park, Hexham NE48 1BT, with local accommodation and activities in and around Kielder Water and the wider Northumberland countryside. Visit the organization's website for the most recent information.