Watford
Trail Running Calendar near Watford 2026-2027
Explore the top trail runs near Watford for 2026-2027! We've gathered 250 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2027
A 30 mile out and back ultra along the River Stort with mostly flat riverside trail, checkpoints about every five miles and an eight hour cut off.
November 2027
Fireworks-themed marathon and half marathon on a lapped lakeside course at Caldecotte Lake with basic support and a finisher's medal.
Point to point Half Marathon along the Grand Union Canal from Cowley to Cassiobury Park, Watford, on towpaths, trails and woodland. Entry from £35.
A commemorative 7 hour Time Challenge in Staines along the Thames with options from 3 km to ultramarathon distances and medals for finishers.
Trail half marathon and 10K at Wimbledon Common on 21 November 2027 with chip timing, free race photos and post race goodies.
Trail races through Alexandra Gardens with 10K and half marathon options, chip timing, free photos and support for Brain Research UK.
December 2027
Guided trail run at Box Hill covering 12.5 miles with about 1000 m of ascent across woodland and technical climbs, led at a steady group pace by an experienced guide.
A fully signed 50k trail ultra in the Surrey Hills from Dorking Sports Centre on 5 December 2027, with checkpoints, SportIdent timing and a 10 hour limit.