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Trail Running Calendar near Greenford 2026-2027

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Explore the top trail runs near Greenford for 2026-2027! We've gathered 251 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

June 2027
Two supported trail options in London - a 55 km ultra and a 25 km trail run along the Capital Ring, finishing at Richmond Green with feed stations and chip timing.
At Prospect Park in Reading this Race for Life event offers a 10k run as two laps of the 5k course plus a separate 5k option, with grass and woodland terrain and some steep slopes.
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 event at Wendover Woods featuring a Half Marathon, 10k, new 5k and junior run on hilly forest trails with maps, medals and on-site facilities.
A 10 km out-and-back race through gravel paths and woodland at Weald Country Park in Brentwood, organised by MCC Promotions. The event includes on-day registration, water stations, prizes and supports the charity Sport In Mind.
Urban 100 km ultramarathon in central London with 100 km, 50 km and 25 km routes that pass 100+ city landmarks and include staffed checkpoints.
A muddy 5k obstacle course at Cassiobury Park where participants climb, crawl and slide through timed waves while raising funds for cancer research.
A community Race for Life event at Cassiobury Park on 12 June 2027 offering 3k, 5k and a 10k double lap course with accessible facilities.
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.
Trail marathon and half marathon at Denbies Wine Estate on 19 June 2027, run on a 1 mile loop with chip timing and an extended start window.
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.
A 50 mile loop ultra at Denbies Wine Estate in Dorking with a flatish one mile circuit, chip timing, several concurrent race options and up to 30 hours to finish.
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.
Trail running in Surrey on 19 June 2027 with five routes from 5 km to 53 km through ancient woods and North Downs views.
Scenic trail half marathon at Dunstable Downs on 20 June 2027, 21.2 km with about 450 m elevation, two aid stations and a 250 runner field.
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.
Point to point 13.1 mile mixed terrain half marathon from Marlow Rugby Club to Windsor, with chip timing, medal, water stations, medical support and baggage transfer.
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.
Women only trail event in Surrey offering 50 km, 25 km and 10 km routes from Denbies Vineyard with signed courses, aid stations and downloadable GPX maps.
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