Trail Running Calendar South East (England) 2025-2026

Celebrate Christmas Eve with the Die Hard Christmas Marathon or Half Marathon around Caldecotte Lake in Milton Keynes, run on a scenic clockwise lake circuit. Enjoy a festive challenge, on course support and a bespoke finisher medal.

The Santa Claws 10km will take place in Thatcham on Wednesday 24 December 2025. You can run 10 kilometers.

Join the Christmas Day Cracker Run, a friendly 7 hour time challenge along the Thames at Wraysbury. Run as many laps as you like from a short 3 km up to marathon and ultra distances, then celebrate with a festive goody bag and medal.

Join the Boxing Day Run, a spirited 3.5 mile route from the Devils Punch Bowl Hotel across Hindhead commons and up Gibbet Hill. Pick a competitive category or the fun Drinking Run with a pint at the two mile point.

Join the Eartham Xmas Score on Saturday 27 December for 60 or 45 minute timed score courses across festive South Downs terrain. SO juniors enter free with a special code from the organiser for a family friendly orienteering challenge.

Winter X is a scenic trail run through the Meon Valley and South Downs offering 10, 30, 50 and 70 km routes from Meonstoke. Enjoy marked trails, chip timing, stocked checkpoints, an event tee and post race food and drink.

A scenic 7.5 km trail loop on the 1066 Country Walk with a pub finish at The Plough. Limited to 50 runners, this friendly, marshalled event includes post race tea and cake.

Run among the vines at Rathfinny on 28 December 2025 with two 5 km loops across rolling South Downs terrain. Just 75 places and most of the entry fee supports the WOLO Foundation for families affected by cancer.

Light up the Downslink on a festive 10k headtorch run from Shoreham to Bramber and back, starting and finishing at the Toll Bridge on 29 December 2025. Fully marshalled with an aid station and chip timing, this atmospheric night run awards..

Frozen Phoenix Day 1 on 29 December 2025 offers a flat canalside course at Xcel SPORTS HUB in Walton on Thames. Pick 5 km, marathon or ultra, run laps and claim a rainbow plated finishers medal onsite or virtually.

Ring in the new year at the River Thames Run, a scenic 6 hour timed challenge at Wraysbury Skiff and Punting Club with 5k to ultra options on a flat riverside course. TRA licensed and welcoming atmosphere.

Celebrate New Year's Eve around Ardingly Reservoir with flexible laps so you can tackle 5 km to ultra distances. Fancy dress is encouraged, all finishers get a bespoke memento and virtual entries are welcome.

Join MLS Long Valley North: The Nick Bateson Trophy on Wednesday 31 December for an exciting Military League orienteering meeting. Routes range from novice Orange to challenging Brown plus a 75 minute score event, ideal for all abilities.

Kick off 2026 with the Knacker Cracker, a scenic and challenging 10 km trail over Box Hill on 1 January, with big climbs, North Downs views and a finish at Box Hill Fort. A Nipper Knacker kids run and the Knicker Knacker women’s prize add e..

Join Rhino Run on the River Thames at Wraysbury near Egham to support the save the rhino cause, with some proceeds donated. Pick 5k up to marathon or ultramarathon, or tackle a six hour challenge and enjoy club facilities.

Join the Penshurst Village Cross Country Run on Sunday 4 January 2026 for a scenic 5 mile challenge through village trails. Choose the solo 5 mile or race with your dog in the canicross 5 mile for a fun winter outing.

Test your navigation in a 60 minute score at Tilgate Golf Course on Thursday 8 January. Low entry fees, junior discounts and optional chip hire make it perfect for newcomers and seasoned runners, with juniors able to enter free using a code..

Country to Capital is a 43 mile ultramarathon from Wendover to Little Venice, London, blending country trails, roads and a canal towpath into the city. GPS tracking and checkpoints guide runners to a lively canal side finish.

Run under the stars on muddy, rolling trails through Denbies Estate and the Surrey Hills at Dark Skies Surrey Hills. Distances from 1K kids to 10 miles, so bring a head torch and off road shoes while supporting the Dorking Area Food Bank.

Hit the Surrey Hills for G3 no.1 at Newlands Corner on 10 January 2026, with 10 km and 15 km trail routes across mud, rocks and forest. Expect hilly, technical terrain and stunning views for a true winter trail challenge.