Watford
Trail Running Calendar near Watford 2026-2027
Explore the top trail runs near Watford for 2026-2027! We've gathered 235 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2027
A Thames Towpath trail event from Putney Bridge to Henley offering 100, 75, 50 and 25 km options plus supported rest stops and camping.
Trail half, 10K and a free 2 km kids run at Denbies Vineyard with wine stations, live music and a post-race party.
A 10 km trail run around Sandridge, St Albans, starting at Woodcock Hill on 12/09/2027 with entry listed at GBP 23.
Undulating trail races on Ashtead Common on 12 September 2027 offering a 10 km and a 2 km kids run while raising funds for local charities.
Looped trail event from Henley with supported 50 km, 25 km and 10 km options, camping, staffed rest stops, medical cover and GPS tracking.
October 2027
A fully marked 100 km trail ultramarathon around the Chiltern Hills from Chesham with GPS tracking, six checkpoints, a 19 hour limit and a 250 runner field.
November 2027
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.
December 2027
A guided 12.5 mile trail run around Box Hill that gains about 1000 metres of elevation across woodland, heathland and open fields. Group pace with technical climbs and scrambling and a chance of an alcohol free beer at the finish.
A fully signed 50 km trail ultra in the Surrey Hills on 5 December 2027, with checkpoints, SportIdent timing and a 10 hour cutoff.