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Trail Running Calendar near Welwyn Garden City 2026-2027

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Explore the top trail runs near Welwyn Garden City for 2026-2027! We've gathered 155 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

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.
Races on the Thames Path at Wraysbury Skiff & Punting Club in Runnymede offering Marathon, Half Marathon and 10 km courses with marked turnaround points and stocked checkpoints.
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.
Nuclear Rush is a muddy obstacle race in Brentwood, Essex, with courses from 1.5 km to 12 km and signature features like the Deathslide and multi lane zip wires.
A guided 30 km trail run through the Chiltern Hills with technique instruction, checkpoints, refreshments and a finisher's medal near Tring Station.
Experience London's energetic Hackney Moves Festival featuring a half marathon on closed roads, a sunset 10K, and a community festival at Hackney Marshes.
A 10th anniversary half marathon and new 10k in Chislehurst that explores local green spaces and raises funds for The Maypole Project.
Trail races of 10 mile and 5 mile at Cammas Hall Farm, Essex on 16 May 2027 with chip timing, water stations and finisher t-shirt and medal.
Race for Life at Weald Country Park in Brentwood features 3k, 5k and 10k routes across grass and woodland trails. The 10k is two laps of the 5k course and the event is chip timed.
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.
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.
A supported trail challenge from Richmond to Brighton offering distances from 10 km to 100 km with rest stops, GPS tracking, camping, and on route medical support.
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