Trail Running calendar near Welwyn 2025-2026

We have found 367 Trailruns within 80 miles of Welwyn. See below where and when you can find the races.

Run through Alexandra Gardens with views of Windsor Castle at the Windsor Trail Run on 30 August 2026. Choose a 10K or half marathon, enjoy chip timing, free race photos and a lively event village.

September 2026

Enjoy a sunset trail run through Ickworth Park's rolling woods and meadows with 5k and 10k options. Chip timed race with a finisher medal and first aid on site; bring grippy shoes and a torch for safety.

Take on the South Coast Ultra Challenge along the South Downs Way from Eastbourne to Arundel, passing Beachy Head, the Seven Sisters and Brighton on stunning coastal trails. Choose distances from 25 km up to a full 100 km continuous or spli..

Run along the River Thames at Temple Island Meadows with half marathon, 10K and junior races supporting Royal Berks Charity. Enjoy mixed undulating trails, finisher medals, chip timing, free photos and a lively event village.

Guided 10km evening trail run around Silent Pool, following the North Downs Way through Netley Heath to Shere. Sunset and headtorch night runs are social guided outings not races, ideal for fit trail runners.

Run scenic, undulating woodland and lakeside trails around Bewl Water in Lamberhurst, Kent, with distances from 10K to a 50K ultra. This biannual series, praised by Runners World, offers measured courses, route maps and finisher medals.

Run 4.167 mile loops each hour at High Lodge in Thetford Forest until one runner completes an extra lap. Chip timed main race has a £250 prize and free entry to the summer Back Yard Ultra.

Take on the 50 km Boudicca Way ultra through scenic Norfolk countryside from Diss to Trowse, Norwich on 12 September 2026. Limited to 250 runners, enjoy checkpoint support, GPS tracking and a warm finishers meal.

Run or walk the Thames Path Ultra Challenge from Putney to Henley, with distances from a 10 km riverside loop up to the full 100 km ultra. Choose a one day push or a relaxed two day option with midway camping and festival vibes in Henley.

Run scenic trails in the Surrey Hills at Farnham Pilgrim on 13 September 2026, with hilly routes and great views. Pick a half or full marathon and enjoy friendly marshals, water stations and a lively finish at The Sands Recreation Ground.

Run scenic, hilly trails around medieval Rye, linking ancient tracks through the High Weald and passing Norman churches. Choose 30k or 15k with about 1,500 ft of climb in a lively community event that supports a local charity.

A scenic 13.1 mile trail through Richmond Park, starting and finishing at Sheen Gate. Rolling trails, lakeside views and woodland wildlife make this a refreshingly classic half marathon for runners of all levels.

Join the Alf Shrubb Memorial 10k and 5k in Slinfold, a friendly trail race through West Sussex countryside finishing at Slinfold Cricket Club. Chip timing, medals, cakes and a licensed bar make it a lively community fundraiser supporting lo..

Run Triple Trail Races at Loddington Farm on 19 September 2026 and link the North Downs Way Greensand Way and Weald Way across 25 km to 100 km options. Expect a revamped 50 km, a buzzing race village and on site camping.

Run a scenic 47 mile route from Chipping Campden to Painswick along the Cotswold Way, with rolling hills and varied trails. Support stations, live tracking and a finishers medal help you tackle the 15 hour challenge.

UTMB Index

The Lucky Horseshoe invites runners to tackle scenic out and back trails around Bury St Edmunds on 19 September 2026, with distances from 5k to ultra and friendly aid stations. Expect a bespoke finisher medal and a welcoming race village at..

Run the Cotswold Way Century, 102 miles of scenic, very hilly trail from Chipping Campden to Bath. Take up to 32 hours with aid stations, live tracking and a buckle for finishers.

Chiltern Wonderland 50 is a single loop 50 mile trail from Goring on Thames that tackles 5,600 ft of climb along the Ridgeway and Thames Path, promising a tough and scenic day in the Chiltern Hills. Well marked course and five aid stations..

UTMB Index

Run scenic countryside trails at the Clipston Trail Half Marathon and Country 5 Miler, starting from Clipston Recreation Ground. Enjoy rolling hills, a homemade cake at the finish and the feel good factor of supporting local playing fields.

Event overview The Bradenham Blast takes place on Sunday 20th September 2026 and offers three trail distances: 5km 10km Half Marathon (21.1km) Routes run through beech woodland and across the Bradenham Estate in the Chiltern Hills, which..