Watford
Trail Running Calendar near Watford 2026-2027
Explore the top trail runs near Watford for 2026-2027! We've gathered 196 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
June 2027
A point-to-point trail event through the Hertfordshire AONB offering marathon, half and 10 km distances open to both runners and cyclists with separate results and medals.
Trail running at Wendover Woods on 6 June 2027 with Half Marathon, 10k, a new 5k and a junior run on hilly forest trails and on-site facilities.
An urban ultramarathon in central London with 100km, 50km and 25km routes that pass over 100 city landmarks, with checkpoints and training resources.
A muddy 5k obstacle course at Cassiobury Park where participants climb, crawl and slide through timed waves while raising funds for cancer research.
A 75 mile off road ultra on a one mile loop at Denbies Wine Estate with up to 30 hours to finish, chip timing and multiple concurrent race options.
A 100 mile ultra on a flat one mile trail loop at Denbies Wine Estate offering 12 hour and 24 hour options plus 50, 75 and shorter races.
A 24 hour attended challenge at Denbies Wine Estate in Dorking where runners complete 1 mile on the hour for 24 consecutive hours; onsite tent camping, daytime cafe service and a simultaneous virtual option are provided.
Run one mile on the hour for 12 consecutive hours at Denbies Wine Estate with chip timing, a finisher medal, camping and a simultaneous virtual option.
A scenic trail half marathon at Dunstable Downs, 21.2 km with 450 m ascent, marked route, two aid stations and a 4 hour time limit.
Timed event at Denbies Wine Estate on 20 June 2027 using a 1 mile loop; runners choose distances from 1 mile to ultra and run laps within a six hour limit.
A ten-leg team relay along sections of The Ridgeway national trail covering the 86.5 mile route, organised by Marlborough Running Club with gender composition rules.
July 2027
An 82 mile point-to-point ultramarathon from Epping to Harwich along mixed trail and road, with checkpoints, GPS tracking, a race medical team and a 24 hour cut-off.
A muddy 5km obstacle run at Wild Forest in Brentwood on 3 July supporting Essex Wildlife Trust, with safety teams, parking, showers and a medal for each participant.
A 21.1 km off road trail half marathon on The Ridgeway in Buckinghamshire with undulating terrain, two aid station visits and UTMB World Series index status.
Group guided 10 km trail run across the boardwalk and heathland of Thursley National Nature Reserve with evening and night options, car parking and a post-run alcohol-free beer.