Trail Running calendar near Harwell 2025-2026

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.

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 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.

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.

Take on a 6.7 km loop at Wyre Forest with Lone Wolf Birmingham, running one lap each hour and as many laps as you like up to 24 hours. Wooden trophies and medals await finishers, with a cafe and relaxed event atmosphere.

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.

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..

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..

BigSky Trails concludes the Classic Element Trail Series, sending runners from Hyde Common across open plains and winding New Forest trails with wide horizon views. Choose 18 mile or marathon and take a bespoke medal or opt for a tree.

Take on the Chiltern 50 Ultra Challenge from Henley Showground and enjoy looped trails through the rolling Chiltern countryside, with walk, jog or run options to suit every pace. Basecamp adds camping, a Saturday meal and shuttle service.

Experience Cranborne Chase from Salisbury Racecourse on scenic undulating trails. Choose marathon, half marathon or 10k along ancient droves and woodland tracks, with parking, showers and a medal for every finisher.

Run through ancient woodland in the Forest of Dean at the Autumn Half Marathon starting and finishing at Speech House. This scenic 13 mile trail on well marked tracks supports local charities and awards a medal to every finisher.

The South Downs 100 mile (Autumn Event) is a challenging single-loop trail race held in the scenic South Downs National Park, starting at Plumpton Racecourse in Lewes, East Sussex. Covering 100 miles with over 12,000 feet of elevation, the..

Run to the Sea Bournemouth on 3 October 2026 is a point to point 50 km ultra from Moors Valley to Hengistbury Head, pairing flat scenic forest trails with seafront running. Course is fully signed with feed stations, a finish medal and event..

Take on 25 km of scenic trails through Epping at the London EcoTrail, an eco focused run that blends challenge with beautiful countryside views. Perfect for trail lovers seeking a green, memorable race day.

Take on the scenic 50 km challenge through Epping Forest in London on 3 October 2026. Enjoy sweeping trails, leafy views and a rewarding long distance test for experienced runners.

Run to the Sea Bournemouth is a scenic 50 km point to point ultramarathon that threads forest trails and coastal paths to a seafront finish at Hengistbury Head. Enjoy a fully signed route, regular feed stations and a bespoke medal on 3 Oct..

Run beneath starry skies on the South Downs at The Dark Downs, a dusk to night trail event from Plumpton Racecourse near Lewes. Choose a 50k or half marathon on rolling, runnable trails with reflective signage and friendly aid stations.