Trail Running calendar near Grafham Water 2026-2027
We have found 493 Trailruns within 80 miles of Grafham Water. See below where and when you can find the races.
0 – 100∞ km
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A guided group ultra run from St Martha's in Guildford along sections of the North Downs Way via Box Hill and Denbies Wine Estate, with kit support, group pacing and an alcohol free beer offered at the finish subject to availability.
An inflatable obstacle course at Kempton Park Racecourse on 3 October 2026 offering 2.5k laps and options for 2.5k, 5k, 10k and 15k. The non timed event includes a finisher medal, music zones, water and on site facilities.
A 50 km ultramarathon in Epping Forest on 03 October 2026, organised by London based Camino Ultra, with the listed venue at Capel Road, London E12 5DB. A 25 km EcoTrail at Bell Common is also shown for the same day.
A trail running event covering 25 km in Epping on 3 October 2026. The London EcoTrail 25 KM takes place at Bell Common, Epping CM16 4EA, UK.
A 10th anniversary five mile chip timed cross country and canicross event across the Upper Wreake valley, with varied terrain and village hall race headquarters; limited to 200 entrants and open to runners aged 12 and over.
Guided 30 mile trail run on the North Downs Way from St Martha's Hill, featuring Box Hill and Denbies Wine Estate. Group-paced with coach support, aimed at first-time ultra runners; a post-run alcohol-free beer may be provided.
Wild Run Cotswolds showcases rugged off road trails on a private estate with fully marked routes, chip timing and a family friendly supporter zone. Entries are limited to 600; choose 10K, half, marathon or the six hour 360 challenge.
A charity 5 mile off road trail race through Cawston Park in Norfolk, chip timed and marshalled, raising funds for Norfolk Lowland Search and Rescue with on site parking and refreshments.
A coastal ultramarathon along the Essex saltmarsh, this edition covers about 50 miles from South Woodham Ferrers to Maldon Promenade Park. The route is supported with regular aid stations, GPS tracking for each participant and shuttle optio..
A functional fitness race in Brierley Hill on 4 October 2026 combining ten prescribed exercises with repeated runs. Solo, doubles, and relay entries are offered with standard and LITE weight divisions.
Half marathon and 10km around RAF Greenham Common in Berkshire on a flat, traffic free course. The in-person event supports New Life Special Care Babies and includes water stations and a children’s race.
A flexible 6-hour timed run along the flat Jubilee River towpath. Run one 5.24-mile lap or see how many you can complete. The scenic route passes through countryside with views towards Windsor Castle.
A backyard ultra at Turvey House where runners repeat a 4.167 miles loop each hour; solo and paired entries are available, with 8 hour and 7 hour capped options and chip timing.
Trail races at Box Hill in Surrey with 21K, 31K and 50K options on marked routes. GPX files, chip timing and an event village with medals and post race food.
A guided half marathon through the Chiltern Hills covering about 13 miles with 300 m ascent, grouped by ability and led by qualified Run Leaders, including a refreshment point, finisher’s medal and Trees not Tees certificate.
Woodland trail races in Epping Forest offering a half marathon and a 10K in October 2026, with marked courses, aid stations, chip timing and eco-friendly measures.