Half Marathon Trail Races
We organise three annual trail half marathon events, all situated on breathtaking routes within the Chiltern Hills.
Half Marathon Challenge
Our three half marathon races take place over a four-week period next summer, and we’re challenging you to complete them all!
With a total distance of 64km with 1,500m of elevation, you’ll experience some of the best trail running and views in the Chiltern Hills — plus, you’ll earn a special t-shirt!
The races are: Dunstable Downs Half (22nd June), Chiltern Ridge Half (6th July), Hughenden Valley Half (19th July) — Enter all three for just £86 (£80 affiliated)!
Dunstable Downs Half Marathon
A trail half marathon with stunning views at National Trust's Dunstable Downs estate.
Chiltern Ridge Half Marathon
An epic half marathon along The Ridgeway National Trail in Buckinghamshire.
Hughenden Valley Half Marathon
Our half marathon distance is back in 2025! Take on our amazing route around the National Trust's Hughenden Manor and surrounding woodlands.
Chiltern Hills 100K
26th April 2025 | 100K, 1800m+
Keep up with the pace
Subscribe to our newsletter and you'll receive £5 off your first entry!