Trail Running calendar near London 2025-2026

The Riverside Marathon & Half Marathon, organized by Phoenix Running, takes place in Walton on Thames, Surrey, along the scenic River Thames towpath. This UK Athletics certified event features flat, fast, and accurately measured courses with no elevation gain, ideal for runners seeking personal best..

The 12th Colworth Hare and Tortoise Run is a 26.3-mile, five-lap event around the Colworth Estate in North Bedfordshire, hosted by Colworth Striders. The course blends gently undulating trail with unclassified road, including woodland paths with uneven surfaces and roots, narrow sections that limit..

The Zig Zag Running St Andrews Day Challenge is a multi-terrain running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants can choose between a 6-hour or 4-hour timed challenge, running multiple laps of a 5.3 km course featuring gravel footpaths and..

Surrey Hills Half Marathon is a guided trail half marathon starting and finishing in Guildford, Surrey. The 13-mile route threads through the Surrey Hills’ scenery, including St Martha’s Church and hill, the village of Shere, and Newlands Corner and Hackhurst Downs, with sections of the North Downs..

Winter on the Downs is a pair of single-loop trail ultras around the trails of East and West Sussex. Both races start and finish in Helen Garden, Eastbourne. Distances offered: 55 miles 100 miles The route begins over Beachy Head and the Seven Sisters, then heads toward Plumpton. The 55-mile cour..

Sussex Downs Trail Run takes place at Plumpton Racecourse in the South Downs National Park, Mid-Sussex, with easy access from Brighton, Haywards Heath, and Lewes. The event offers three distances: 22km, 12km, and 9km. The course starts with a flat 3.5km tree-lined warm-up, then climbs to the South D..

Cowdray Winter Night Run is a 5km or 10km trail race on the Cowdray Estate in West Sussex. The routes traverse parkland and along the River Rother, with some private estate tracks; the course is mostly flat with a couple of gentle climbs. Runners start at the Cowdray Ruins and finish at the Walled G..

The event is scheduled for 6 December 2025 at Old Fowler Barracks, Ludgershall Road, Ludgershall, SP11 9RR. It takes place on Salisbury Plain, which is described as the largest military training area in the UK and possibly Europe. The route follows well established footpaths and byways and includes..

Trifarm Winter 10k is the final round of a four-event winter trail run series held at Trifarm, Boreham, Chelmsford, Essex. The 10k route is mostly off-road, on public footpaths and bridleways, and runs clockwise to head away from the river to avoid floods. The start and finish are at the far end of..

The ATW Grafham Water Trail & Canicross is a scenic 10-mile trail running event held at Grafham Water Visitor Centre in Cambridgeshire. The course begins on the iconic dam, offering a fast start, then loops around the reservoir through woodland nature reserves, past Dragonfly Pond and Sanctuary Bay,..

The Bauble Bimble is a festive running event held at Ferry Meadows, a large country park near Peterborough, UK. Participants can choose between a 6-hour or 4-hour timed challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass areas. The event welcomes ru..

The Mince Pie 10 is a festive 10-mile race held in Peacehaven, East Sussex, organized by Seaford Striders. The multi-terrain course features about six miles of farm tracks and bridleways, with the remaining four miles on quiet roads, including a challenging hill around mile six. Participants can exp..

Freedom Racing's Hurtwood 50k is a late‑season trail ultra set in the Surrey Hills of southern England. The course covers about 50 kilometres on a fully signed long‑distance trail route, with extra signage and regular checkpoints at 7, 13, 18 and 24 miles offering water and food. Featuring a fast, o..

Winchelsea 10km Trail Race is a picturesque, 10km trail loop around Rye Harbour Nature Reserve, organized by 1066 Trail Races. Nearly 95% of the route is on trails, with a marked and marshalled course. The race hub is Winchelsea Beach Community Centre, which also provides toilets, changing and parki..

The Winter Downs 200 is a continuous trail run of 200 miles (321 km) held 10–14 December 2025. The race is a single-stage loop starting and finishing at Juniper Hall, Old London Road, Dorking, RH5 6DA. The course uses a sequence of established trails: North Downs Way, Vanguard Way, South Downs Way,..

Mince Pi Run - races of 2 decimal places is a 14 December 2025 off-road event at Shalford Park, Guildford. Participants choose from 3.14 to 31.4 miles (1–10 laps) on a scenic, mostly flat course with one or two hills. A Pi marathon option and a 1-mile Pi-shaped fun run for young children are offered..

The Salcey Forest Christmas 10K, 5K & Junior Fun Run is a festive trail running event held in Salcey Forest, Northamptonshire. Set amidst beautiful, tree-lined woodland paths, the race offers a virtually flat, mixed-terrain course that can be occasionally muddy. Participants can choose between a 10K..

Let it Stow – Half Trail Marathon is a festive, 13.1-mile trail race organized by Raw Trails in Stowmarket, Suffolk. Runners traverse woodland, meadows and quiet country lanes around Stowmarket and the surrounding countryside, with several road crossings and clear course markings. The atmosphere is..

'Twas The Run Before Christmas is a festive running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants can choose between a 6-hour or 4-hour timed event, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass area..

The Christmas Canter is a festive running event held at the Suffolk Running Centre in Bury St Edmunds. Offering multiple distance options—5k, 10k, half marathon, full marathon, and ultra—the race features a mass start and a seven-hour cutoff. The course is entirely on road, passing through picturesq..