Trail Running Calendar South East (England) 2025-2026

BigMud Trails EARTH kicks off the Classic Element Trail Series at Queen Elizabeth Country Park, guiding runners through the Meon Valley and South Downs with two ascents of Butser Hill. Options: 16 miles, marathon or 50 km on muddy trails.

Join the Winter Trail Run at Gatton Park on 22 February 2026 for scenic multi terrain 5K and 10K loops, plus a Canicross category. Expect a finisher medal, bag drop and refreshments, with prebooked parking helping to support Gatton Trust.

Run the 50k North Downs Ridge from Denbies Wine Estate along the North Downs Way through Surrey woodlands. Roughly 2,986 ft of ascent, aid stations, UTMB qualification and an eco wooden finisher medal await.

Run Reigate Canicross & Trail at Gatton Park on 22 Feb 2026 offers scenic multi terrain 5K and 10K trail races plus a dedicated canicross. Chip timing, medals for humans and dogs and tasty treats for pups make it a fun day out.

Join a guided 10 km trail run through Thursley National Nature Reserve, an easy, mostly flat route ideal for first time trail runners at about 10 min per mile. Enjoy heathland scenery and Britain’s Favourite Path boardwalk.

Join G3 no.3 at Newlands Corner, Guildford for a choice of 10 km or 15 km routes across Surrey countryside on Saturday 28 February 2026. Friendly, well marked courses with series entry options make this a perfect early season challenge.

Join a guided 30 mile South Downs Way ultra from Harting Down, ideal for first time ultra runners looking for a friendly, non competitive challenge. Savour rolling chalk hills, ancient yews at Kingley Vale and expert guided coaching along t..

Explore coastal trails around Chichester Harbour AONB with scenic 21 km and 16 km options that skim the foreshore and South Downs. Dog friendly and low elevation, ideal for runners and canicross pairs.

Chocothon is a friendly timed lap on a flat 5.3 km riverside towpath, letting you complete as many laps as you can within a seven hour window. Distances from 5 km to ultra, medals and aid stations make it perfect for all abilities.

Challenge yourself on scenic trails at Up on the Downs on 1 March 2026, starting and finishing at Breamore House near Salisbury. Choose from a half marathon, 10k or 5k with a Canicross option and earn a finisher medal.

Run the scenic Windsor & Eton 10km on Sunday 1 March 2026, a mixed terrain route along the Thames and Jubilee Rivers through Dorney and Eton Wick. Finish by Windsor & Eton Brewery for a medal and your choice of beer or soft drink.

Join a guided 10km trail run at Silent Pool near Guildford along the North Downs Way and past film locations from The Holiday and Bridget Jones Diary. Group pace, head torch and shoe trials, and a post run alcohol free beer add to the fun.

Join the Humanity Direct Amersham Ultra on 7 March for scenic footpath and bridleway routes of 10 km, 25 km or 50 km starting at Dr Challoner's School. Run or walk to fundraise for Humanity Direct and earn a finisher medal.

Take on a scenic, strenuous trail from Helen Gardens Eastbourne across chalk and forest with stunning views of the Seven Sisters cliffs. Choose 10K, half, marathon or ultra on a marked and timed course with a finishers medal.

Brutal at Chawton is a raw trail run across muddy woodland, water filled craters and steep sided valleys with tight technical trails. Options for 5 km or 10 km include dedicated canicross waves so bring your dog and expect big challenges.

Run scenic laps along the Thames towpath in Walton on Thames at the Ladybird Run, on flat off road trails with timed entries or a one hour rock up and run start window. Pick 5 km to ultra distances and complete as many laps as you like with..

Leith Hill Half Marathon is a challenging 13.1 miles trail race across Surrey with about 1,800 feet of ascent and a summit finish at Leith Hill Tower. Enjoy scenic singletrack, a reusable medal, local beer and a full cooked breakfast.

Wight Riot is a mixed terrain coastal run at Hordle Cliff West, with sweeping views of the Isle of Wight and a scenic stretch past Sturt Pond Nature Reserve. Choose distances from 5K to ultra marathon and earn a medal for completing a lap o..

Steyning Stinger on the South Downs offers Marathon, 30k and Half Marathon routes across scenic multi terrain with support stations and free race photos. Entries close midday 6 March 2026; finishers receive a medal and postrace breakfast.

Join the women focused TrailX Women Run at Culden Faw Estate near Henley on Thames on 8 March 2026 for a scenic day on the trails. Multiple distances from a 3 km fun run to 13 km competitive options make it perfect for all abilities.