Trail Running calendar near Letchworth Garden City 2025-2026

We have found 318 Trailruns within 80 miles of Letchworth Garden City. See below where and when you can find the races.

Run the Wild Half Marathon brings a guided 13 mile trail through the Chiltern Hills with rolling chalk climbs and wooded trails. English Athletics run leaders group you by ability, offer coaching, and a midcourse refreshment stop and finish..

Join the Zig Zag Challenge at Brandon Country Park for timed 4 or 6 hour running on a scenic 5.3k multi terrain lap in Thetford Forest, entries limited to 100. Stack laps to tackle marathon or ultra distances and earn a bespoke finish medal..

The Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. This single-loop course offers a runnable, non-technical route through the scenic South Downs, making it ideal for beginners and experienced run..

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Tackle a scenic 5 mile off road spring trail at Upcote Farm near Cheltenham on 29 March 2026. Expect rolling climbs, forest tracks and farm paths, chip timing and medals for all finishers in a friendly limited entry race.

April 2026

Saturn's 7 Hour Time Challenge at Wraysbury Skiff & Punting Club (Wraysbury, TW20) is an inclusive, self-paced race along the River Thames. Entrants choose a distance from a 3 km lap, with full laps around about 7 km (4.37 miles) or a short..

The Testway Ultra is a challenging ultra marathon held in Hampshire, England, featuring 40 and 50-mile distances along the scenic Testway footpath. The route stretches from the chalky downs near the Northern Hampshire/Berkshire border to th..

Join the Mortimer 10 km on Monday 6 April 2026 for a scenic two lap off road route through local woodlands, with a dog friendly canicross option. Enjoy chip timing, medals and a lively event village while supporting Ollie Young Foundation.

Event overview The Rosebud Marathon is a 26.2-mile section of the Rose of the Shires Ultra Marathon through Northamptonshire. The event takes place on Saturday 11 April 2026, with registration and the finish hosted at Brixworth Country Park..

Event details The Henley River Half Marathon, 10K & Junior Race takes place on Saturday 11 April 2026 in Remenham Lane, Henley-on-Thames RG9 3DB. The event is organised by RunThrough UK and is based at Temple Island Meadows, the launch..

The The Maverick East Sussex Trail will take place in Lewes on Saturday 11 April 2026.

Tackle the Rose of the Shires at Brixworth Country Park with a 54 mile ultra, a 26.2 mile Rosebud Marathon or relays. Enjoy varied trails, roads and canal towpath, checkpoint support and live tracking for a rewarding challenge.

Spring Run the Seasons at Cowdray Estate on 11 April 2026 offers scenic trails across the South Downs, with 5k, 10k and 10 mile races plus canicross. The 10k scores in the series and routes showcase heathland and big views.

Join the Nene Valley Races Kings Cliffe 10k on Sunday 12 April 2026 for a scenic circular trail through Northamptonshire fields, farm tracks and old railway lines. Fully marked with a stocked aid station and eco friendly cup use.

Take on the Haughley Festival of Running at Haughley Park Suffolk, with distances from 5k to ultra and a cap of 300 entrants. Enjoy undulating park and woodland laps, secure on site parking and a bespoke finishers medal.

Pick Market Harborough or Northampton as your start and run the traffic free Brampton Valley Way as a 14 mile one way or 28 mile out and back. Mostly flat route, finisher medal and free photos, tunnels need a head torch.

Discover the Spring Trail Series on the Serpent Trail in the South Downs at Cowdray estate on 18 April 2026. Choose from 12 km to 110 km and enjoy a fully marked, supported route through greensand hills, rivers, woodland and heath.

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The Chiltern Ridge Classic 50K is a scenic Ridgeway ultra through the Chiltern Hills, taking in iconic climbs, beech woodlands and wide views. Limited to 400 runners with a 9 hour cut off, it runs from Berkhamsted Castle to Wendover.

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Windsor 50 Ultra Challenge The Windsor 50 Ultra Challenge takes place on Saturday 18 April 2026 from a basecamp at Windsor Racecourse. Routes use the Great Park, Runnymede and the Thames Path and return to the racecourse. The 50 km course i..

Roman Ramble at Billingford Lakes offers rugged trail running with four hour and six hour options across heavy half and ultra laps. Parking is included and all finishers receive bespoke medals, so bring your own cup or bottle for refills.

Run the Thames Ring Series, a multi day trail loop based in Streatley on Thames that follows the river and canal towpaths on mostly flat, scenic terrain. Pick 100, 150 or 250 mile routes from 22 to 26 April 2026 for a true endurance fix.