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 350 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
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.
Permanent 7 km mud and obstacle assault course near Dorking, Surrey with over 100 obstacles and options for one, two or limitless laps for solo runners and groups.
Windsor Trail Run Half Marathon and 10K on 30 August 2026 in Alexandra Gardens featuring flat trail routes, chip timing, race photos and post-race goodies.
Full and half marathon around Woldingham on a 13.1 mile loop with wooded trails, open ridge sections and two-lap full marathon option.
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
Scenic mixed terrain running at Remenham Farm beside the Thames with a half marathon, 10K and junior race, chip timed results and themed medals.
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 running event in Newbury where entrants complete as many 3.5 km loops as they like to earn a medal and support New Life Special Care Babies.
A scenic 10K through the private grounds of Loseley Park in Surrey on 6 September 2026, with timed results, finisher medals and official photography.
Trail half marathon and 10 km at Lullingstone Country Park on 6 Sep 2026 with two loops, water station, marshals and a finisher medal.
Free MHAC end of summer gathering at Dummer Down Farm with guided 3K, 5K and 8K trail runs, coffee, food, beer, live music and optional donations to Mind.
A guided group trail run of about 10 km around Silent Pool and the North Downs Way, mixing wide paths and single track, with headtorch options for night runs and optional kit trials plus a complimentary alcohol free beer subject to availability.
A timed, lap-based Friday run along the Thames with flexible rock up and run starts; the £10 affiliated entry is donated to Rays of Sunshine and participants receive a double-sided charity medal.
A team endurance event across the South Downs covering 100 km in under 30 hours, with teams of four or a relay option and support crews meeting at checkpoints.
A bi-annual trail race around Bewl Water in Kent offering 10 km, half marathon, marathon and 50 km ultra on wooded trails and quiet lanes.
Trail running in the Surrey Hills with 10k, 21k and 42k routes on chip timed, well marked courses, aid stations and finisher medals. Starts and finishes at Shere Recreation Ground with free parking and an event village.
A guided loop trail run around Lewes of about 18 miles with over 2600 ft of ascent, passing Mount Caburn, Firle Beacon and Kingston Ridge.