South East (England)
Trail Running Calendar South East (England) 2026-2027
Explore the best trail runs in South East (England) for 2026-2027! Our updated list features 346 exciting trail runs across the region. Find your next trail run in South East (England) below and join the trail community at these great events!
August 2026
About 52 miles across the South Downs National Park, a circular challenge from Plumpton Agricultural College visiting Lewes, Glynde and Alfriston with about 7,000 feet of ascent.
A ten day running series in Walton on Thames from 22 to 31 August 2026 offering daily themed rubber ducks and ten giant spinning ducky medals, with distances from 5 km to ultra and certified out-and-back routes along the Thames towpath.
Free community trail run from Sandhurst to Bodiam Castle, about 10.25 km, with guided or independent GPX options and varied rural terrain.
Point-to-point mixed terrain running from Mayflower Park following the Old Way pilgrim trail, with 15 Mile and Marathon options. The route includes a short boat crossing of the Hamble River and passes several historic landmarks.
Trail running from Lancing College across the South Downs with 5K, 10K, Marathon and 50K routes, marked courses, aid stations and chip timing.
A 7.5 km mostly off road trail loop around Ticehurst with marked and marshalled course, limited entries, prizes and tea and cake after the race.
A laps based timed run at Ardingly Reservoir offering multiple distances, chip timing, an aid station and a donut shaped finisher's medal.
London Backyard Ultra at Frylands Wood Scout Outdoor Centre has runners complete a four mile loop each hour until one remains, with medals, showers and refreshments.
An obstacle mud run on a permanent assault course near Dorking, Surrey, offering 5 km and 10 km options, multiple laps, and entries for solo runners, teams and charities. The course includes mud, water, walls and climbing obstacles.
30 August 2026 in Alexandra Gardens Windsor offers 10K and half marathon routes with views of Windsor Castle. The event includes chip timing, free race photos and an event village.
A mixed trail and road out and back race from Woldingham School. The half is one 13.1 mile lap and the full is two laps, with notable climbs, varied scenery and on course aid stations and goody bags.
A chip-timed 10 km trail race through Shoreham Woods on 30 August 2026, with scenic but challenging sections and entry donations to the woods.
Day nine of the Duck n Run Totally Quackers series on 30 August 2026 in Walton on Thames features timed laps on a flat riverside out and back course, with distances from a single 3.28 mile lap up to an ultra within seven hours.
September 2026
A mixed terrain trail along the Thames at Remenham Farm in Henley on Thames offering a half marathon, 10K and a junior race, with chip timed results, a themed medal and free race photos.
A multi-distance trek and trail event along the South Downs Way from Eastbourne to Arundel with scenic sections including Beachy Head and the Seven Sisters. Distances of 100 km, 50 km and 25 km are supported with rest stops, medical teams, camping an..
Choose a half marathon or full marathon along a flat, scenic riverside towpath from Walton on Thames to Hampton Court and back, run in laps for easy pacing. Limited places and medals for all finishers plus a giveaway for every entrant.
Trail marathon and half marathon in North Hampshire on 05/09/2026, with climbs to 280 m, scenic countryside routes, marked courses, aid stations and chip timing. A Military Cup allows serving units to compete as teams.
A 12-hour looped run at Bloor Homes Southern Regional Office in Newbury where participants complete 3.5 km loops to earn a bespoke medal, with prizes for most loops. The event supports New Life Special Care Babies, is limited to 100 entrants and is 1..
A scenic 10K through the private grounds of Loseley Park in Surrey on 6 September 2026, with timed results, finisher medals and official photography.