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Trail Running Calendar near Dunstable Downs 2026-2027

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Explore the top trail runs near Dunstable Downs for 2026-2027! We've gathered 130 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

March 2027
Experience a 50km trail ultra through the Chiltern Hills with two scenic loops starting and finishing at the historic Stonor Park.
A 17.5 miles clockwise boundary trail race around Ashridge Estate, starting and finishing at Aldbury Recreation Ground, with water, a finisher gift and prizes.
April 2027
Experience a unique night run at Hyde Hall Farm with 6 or 12 hour challenge options on a 5.4 km loop through the Hertfordshire countryside.
Trail run in Windsor on 4 April 2027 offering 10K and Half Marathon routes through Alexandra Gardens with Windsor Castle as a backdrop.
Scenic mixed terrain races along the Thames at Remenham Farm in Henley on Thames. Options include a Half Marathon, a 10K and a Junior Race with marked trails, marshals, chip timing and post race goodies.
A 50K trail ultra along the Ridgeway in the Chiltern Hills, starting at Berkhamsted Castle and finishing in Wendover, with three checkpoints and a 9 hour limit.
Windsor 50 offers supported looped trail routes of 50 km, 25 km and 10 km from Windsor Racecourse through the Great Park, Thames Path and Runnymede.
A guided 42.2 km trail run through the Chiltern Hills with qualified Run Leaders, checkpoints, mandatory trail shoes and a wooden finisher's medal.
Multi-terrain 5 km and 10 km races at Ibstone with routes through Wormsley Estate plus a 1 km or 2 km Run in Colour for ages 4 to 11.
An untimed inflatable obstacle event in St Albans on a 2.5 km lap with distances from 2.5K to 15K, medals, music zones, and on-site facilities.
May 2027
A 100 miles point to point trail race from Richmond to Oxford along the Thames Path with marked route, at least twelve aid stations and a 30 hour cut off.
Rapid Relays at Culden Faw Estate on 2 May 2027 offers 4 km loop relay racing for solo runners, pairs and teams amid woodland and Chilterns views.
A guided 30 km trail run through the Chiltern Hills with technique instruction, checkpoints, refreshments and a finisher's medal near Tring Station.
A chip timed 5 km and 10 km road and trail race at Haddenham Community Junior School on 9 May 2027 with early bird entries and optional event T shirts.
Two days of Spartan obstacle racing at Culden Faw, Henley-on-Thames, featuring Sprint, Super, Beast and Kids races along a riverside course.
A 50 km multi terrain ultra in Maidenhead along the Thames Path, Jubilee River and Green Way with chip timing, four aid stations, live tracking and a cut off of 8 hours 57 minutes.
Track event on a 400 metre athletics track offering distances from 5k to 50k plus a six hour challenge at Wodson Park, limited to 100 entrants.
A six-hour multi-lap event at Blackpit Farm with a 3.3-mile lap, flexible distances, on-site cafe, free parking and nearby sauna and open-water facilities.
Four-day Zodiac themed lap based running event at Old Warden with 5.3 km laps, distances from 5 km to ultra, a seven hour timed format and a 75 runner limit.
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