Trail Running calendar near Welwyn 2026-2027

A looped trail event from Windsor Racecourse on 18 April 2026 offering 50 km, 25 km and 10 km routes through the Great Park, Runnymede and along the Thames with marquee rest stops, medical support and GPS tracking via an event app.

An ultra trail race along the Chiltern ridgeline from Berkhamsted Castle to Hampden Meadow in Wendover. The route is about 51 km with 996 m of ascent, fully marked and supported by three staffed aid stations and a nine hour cutoff.

Trail races on the Serpent Trail in the South Downs National Park offering five distances from 12km to 110km, start and finish at Cowdray Farm Shop, with marked courses, aid stations and on-site camping available.

Tough but rewarding 10 km fell race around Chingford with 450 m of climbing, hosting the first ever Essex County Championships. Pre entry only and open to Essex eligible runners aged 16 and over, with teams welcome.

A timed, lap-based run on a flat 5.3 km towpath course by the River Thames in Walton on Thames. Distances range from 5 km to ultra with flexible rock up and run starts and an optional no-medal lower-price entry.

Run the Martello Half Marathon in Seaford on 19 April 2026, a scenic undulating trail mixing seafront miles with South Downs views. Organised by local clubs, the race features aid stations, a medal and free photos.

Tackle scenic trails at Billingford Lakes on 19 April 2026 with distances from 5k to ultra for every kind of runner. Expect rugged paths, a bespoke finisher medal and post race coffee and cake; bring your own bottle for refills.

Run the rolling trails of the South Downs at the Grand National 10 km Trail Run in Findon, with 10 km, canicross, 5 mile and kids events for all ages. Scenic route, bespoke medals, charity support and a fun Filly or Colt costume prize.

Timed lap event at Buchan Country Park on 19 April 2026 with 5.3 km laps to create distances from 5 km up to ultra within a 7 hour limit. Runners may choose one of twelve medals or a lower cost no medal entry.

Run the Thames Ring Series along scenic river and canal towpaths with three distances: TR250 full loop, TR150 and TR100 sections. Choose your challenge and enjoy riverside trails, checkpoint support and GPS tracking across this adventure.

A limited capacity evening trail run of 5 miles for over 18s with the course run in reverse from previous years. Route files are provided beforehand and finishers can exchange their race number at the bar for a drink.

Join the Ale Trail, a 15 mile sponsored fun run through scenic countryside around Alfriston on 26 April 2026, with just 50 places for a sociable challenge. Start and finish at Ye Olde Smugglers Inne with checkpoints offering beer tokens and..

Choose from 5 km up to ultra marathon on mildly undulating, fully measured roads around Bury St Edmunds on 26 April. Small field, aid stations, parking and a bespoke finisher medal make this a memorable day out.

Test your navigation skills at The Drop Winchester, a point to point challenge where you are driven blindfolded to a mystery drop and must find your own way back to HQ. Choose 10 or 15 mile routes and surrender devices for a true adventure.

A 40 mile circular walking and running event on 26 April 2026 starting and finishing at the Heart of England Social Club in Meriden, with five staffed checkpoints, relay teams of up to six, tracker devices and a hot meal at the finish.

Trail runs of 10 km and 10 mile around Angmering Park Estate on 26 April 2026, with canicross options, marshalled courses, water stations and free race photos.

Trail runs through Alice Holt Forest on 26 April 2026 support GUTS, with a Half Marathon, 10k, 5k and a junior run. Routes use a 5k forest loop with multiple laps for longer distances.

Join NOT the London Marathon Run 2026 on Sunday 26 April in Walton on Thames for a flat, certified lap course along the riverside towpath. Choose marathon, half or a 7 hour timed challenge, enjoy flexible starts and a commemorative medal.

A spring trail run of around 10 km through bluebell-carpeted woods in the Chiltern Hills, starting from Tring and led in ability groups by Run Leaders. Facilities include a cafe, toilets and bag storage; dogs allowed with cani-cross kit.

Two route options across the South Downs National Park, 28 miles (about 4000 ft ascent) or 18 miles (about 2800 ft ascent), with checkpoint food, route files provided, and an 11-hour completion limit.