Trail Running calendar near Harwell 2026-2027

Battle along the Brampton Valley Way in a unique team ultra. Choose your start in Market Harborough or Northampton to represent Leicestershire or Northamptonshire over a flat 45 km traffic-free route. Tackle dark tunnels, enjoy full support..

This 10K trail race explores the scenic, rolling countryside of the Nene Valley. The friendly event features a fully marked and marshaled loop course starting in Kings Cliffe. Participants are encouraged to bring their own water bottles and..

A 15-mile fell race in Cheddar with over 2000 feet of climbing on a fully marked course. Entry includes tea and cake at the finish, with water stations and snacks provided along the way. The race starts on Warrens Hill and finishes at Fairl..

A 42 km trail marathon across the South Downs, starting at Stanmer Park. The unique route merges with the final stretch of the Brighton Marathon for a finish on Hove Lawns. Participants must carry mandatory kit and use a reusable cup at aid..

Tackle the Kymin Dash, a 7 mile road and trail race from Monmouth that climbs to the Round House for panoramic views before descending through fields and bluebell filled woodland. Enjoy a lively finish at Monmouth School Sports Club with Ki..

Wild Horse South Wales 200 is a 200-mile trail ultramarathon through South Wales. The route links historic paths like Offa's Dyke and the Beacons Way, finishing at Worm's Head on the coast. This point-to-point adventure offers a multi-day c..

Set for April 2026, this trail challenge starts and finishes at Windsor Racecourse. Choose from 50km, 25km, or 10km loops through Great Park and along the Thames Path. With dedicated categories for walkers and runners, it offers full suppor..

Race Overview The Chiltern Ridge Classic 50K is an ultra marathon traversing the ridgeline trails of the Chiltern Hills between Ivinghoe Beacon and Whiteleaf Hill. The race is a UTMB World Series Index Race. The current route is slightly lo..

Explore the stunning Malvern Hills on a guided 18-mile social trail run. The route takes in all the ridge summits with over 1300m of ascent, returning via lesser-known woodland trails. It's a group experience, not a race, finishing with a p..

The Spring Trail Series takes runners on the scenic Serpent Trail through the South Downs National Park. With five distances from 12km to 110km, all races start and finish at the same accessible location at Cowdray Estate. The event offers..

Explore the Black Mountains on this challenging LDWA event. Choose from three distances across a route featuring epic climbs and a finish along the Monmouthshire & Brecon canal. The event starts from Abergavenny and is known for its tough t..

The inaugural Essex County Fell Championships features a new 10km course with 450m of climb. This open-entry fell race offers county prizes for qualified Essex runners. Every finisher receives a free drink.

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.

Martley Madness is a 10-mile trail and country lane race through the Worcestershire countryside. The undulating route features woodland, Rodge Hill, and part of the Worcestershire Way. All finishers get a medal and celebratory cake at the f..

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.

The Ibstone Circle offers 5km and 10km multi-terrain runs through the scenic Wormsley Estate, featuring the famous "Ibstone Kicker" climb. Both distances are open to adults and juniors, with a separate "Run in Colour" fun event for children..

Thames Ring Series The Thames Ring Series consists of three non-stop ultramarathon distances run on canal and riverside footpaths in southern England. The main event is the Thames Ring 250, a 250-mile (approximately 256-mile) trail race. It..

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.

A countryside walking and running event around Bath on 25 April 2026 with four distances from 12.5 to 26.5 miles, public footpaths and checkpoints offering food and drinks.