Trail Running calendar near Harwell 2025-2026

Tackle 55 km through the Forest of Dean, from ridges and dense woodland to the River Wye and Symonds Yat viewpoint. Technical single track and riverside sections offer scenic challenge and there is a canicross category.

Choose a scenic 10k or shorter 5k through the Chiltern Hills around Frieth, combining woodland paths and country roads. Expect rolling climbs and panoramic views for a rewarding, hilly challenge for road and trail runners.

Enjoy a scenic 10k through the woodlands of Limpsfield Common and High Chart in Oxted Surrey, with rolling climbs and a downhill finish. Single lap route suits trail runners seeking a challenging rewarding outing.

Run a fully marked and marshalled 10k or half marathon around the scenic Grafham Water reservoir, with medals and prizes for top finishers. Bring trail shoes, a charged phone and your own cup as the race is cupless.

Run the dramatic Jurassic Coast around the Isle of Purbeck with cliff top ridges, steep climbs and technical trails. Choose from 6, 12 or 24 km routes, with the Half Marathon passing Old Harry's Rocks for unforgettable coastal views.

Autumn 100 is a scenic 100 mile trail from Goring on Thames, routing along the Thames Path and Ridgeway in four 25 mile legs. With a 28 hour cut off and 16 well stocked aid stations, it is a supported test for experienced ultrarunners.

Take on the Gatliff Marathon with 25 km or 50 km options across changing scenic footpaths in Kent, Surrey and Sussex. Organised by COPSE Club, the well supported event includes checkpoints with snacks, finish food and showers.

Blaze the Biblins on 18 October 2026 is a scenic 10k trail race through ancient woods and riverbanks near Ross on Wye. Expect technical single track, climbs including the notorious Demon hill, and a lively village finish.

Roughly 12K trail run on bridle paths and the Imber Range near the Westbury White Horse on 18 October 2026. Limited to 200 places so book early for a bespoke finisher medal and category prizes.

Town and Country Harriers is a friendly Bristol based off road club that meets most Thursdays, usually starting and finishing at a local pub. Trails range from city paths to the Mendips and Cotswolds and all who can run 4 to 5 miles are wel..

Halloween 7in7 at Pengethley Manor, Ross on Wye offers seven consecutive days of off road laps through vineyards and a hill, with distances from 5k to ultra. Walk or run any day or go virtual and collect seven themed medals.

Join the Witches Whisk at Pengethley Manor for a spooky Halloween trail across 2.5 km laps through vineyards and rolling offroad terrain. Pick 5k to ultra distances, ideal for runners or walkers after a fun seasonal challenge.

Celebrate Halloween at Pengethley Manor with the Scary Scamper, an offroad multi lap course winding through vineyards and hill sections on the manor grounds. Distances from 5k to ultra welcome runners and walkers with a 7 hour time limit.

Creepy Crawl at Pengethley Manor on 21 October 2026 invites runners and walkers to a spooky off road loop through manor grounds and two vineyards, with a hill each lap. Choose 5k up to ultra for a festive Halloween challenge.

Join the Ghostly Gallop at Pengethley Manor on 22 October 2026 for a spooky offroad challenge through vineyards and rolling hills. Choose distances from 5k to ultra with in person or virtual entries and Halloween themed medals.

Join the Petrified Pootle on 23 October 2026 at Pengethley Manor for a spooky Halloween trail run through vineyards and rolling hills. Choose distances from 5k to Ultra, race or virtual, and earn a Halloween themed medal at the finish.

Run a scenic point to point ultra from Iffley near Oxford to Henley on Thames, following the Thames Path and Ridgeway over roughly 47 miles of riverside and trail terrain. Enjoy checkpoints, GPS tracking and a rewarding countryside challeng..

Join the Spooky Sprint at Pengethley Manor, Ross on Wye on 24 October 2026 for a tough offroad Halloween race through two vineyards. Choose on course or virtual options from 5k up to ultra and enjoy a scenic, challenging looped course.

Challenge yourself on a scenic 30 mile riverside ultra along the flat trails of the Stort and Lee. Enjoy well stocked checkpoints, friendly support and a club house finish with medal and live results at Bishop’s Stortford.

Join the Zombie Shuffle at Pengethley Manor on 25 October 2026 for a spooky offroad run through vineyards and rolling hills. Pick a distance from 5k to ultra, walk or run, and earn a finisher medal or join virtually for Halloween fun.