Trail Running calendar near Semington 2025-2026

Set in South Wales, Celtic Trail Races offers three trail challenges: the Ultra (34 miles), Marathon (26 miles), and Half Marathon (13 miles). The routes wind through Afan Forest and the Rhigos range, finishing along the Coed Morgannwg Way with dramatic views of the Brecon Beacons, Black Mountain, S..

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..

Mortimer Forest Trail Race is a multi-terrain event staged by Ludlow Runners in Moor Park School, Ludlow, on 14 December 2025. The programme offers two courses: a 10-mile route over challenging forest tracks including the notorious Big Dippers and a climb to the top of High Vinnalls, finishing with..

A Nightmare Before Xmas Trail ½ Marathon, staged by Mad Running Junkies, takes place at the Bridgend Miniature Railway Centre in Aberkenfig, Tondu, near Bridgend (CF32 9BZ). The course blends the Hateful Eight 8‑mile route with a further 5+ miles of challenging trail, totaling around 13 miles of mix..

The Christmas Carol Bobble Hat Run, organized by Saturn Running, takes place in the scenic Dare Valley Country Park in Aberdare, Wales. This inclusive event welcomes runners and walkers of all abilities. Participants can choose their distance within a 7-hour time challenge, with a minimum of 3km and..

The Slow and Dirty is a festive-themed 19-kilometer trail race held in Sturminster Newton, Dorset, following a flat, hard-surfaced route along a former railway line known as the Somerset and Dorset (S & D). Despite its name, the course is fast and clean, ideal for runners of all abilities, including..

Santa Claws 10km is a winter cross-country event organized by Racing Line Running, held at Renegade Brewery in the grounds of the Yattendon Estate, Berkshire. The course is a multi-terrain 10km, with a Canicross 10km option for runners with dogs. It delivers a scenic, muddy yet beautiful route throu..

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..

Midwinter Mortimer Trail (MMT) is a self-navigating endurance event by Andali Events in the English Marches. It offers two routes: a roughly 30-mile Ultra and a 15-mile Croft course, tracing the Mortimer Trail from Ludlow Castle to Kington, Herefordshire. The route blends trail, field and road throu..

Plain Crazy Winter is a 12.5-ish mile run around Warminster, Wiltshire, organized by Redfish Events. The course is described as hilly, cold, scenic, desolate and windy, with wintry conditions possible and even snow. The event supports The Royal British Legion Poppy Appeal.Facilities include toilets,..

Winter X is a mid-winter trail-running challenge set in the Meon Valley near Meonstoke, Hampshire. On Sunday 28 December 2025, runners can choose from four distances: 10km, 30km, 50km, or 70km. The route uses well-trodden public trails, including the South Downs Way, with four out-and-back legs acro..

RIVER THAMES RUN takes place at Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA. The event is a time-limited challenge held over six hours. Participants may complete distances from a 5k up to ultramarathon distance within the six-hour limit; a last lap may be started up to 5:59:59. The..

Knacker Cracker is a 10-kilometre trail race held near Box Hill in Surrey. Parking and registration take place at Denbies Vineyard in Dorking, with the race starting at the bottom of Box Hill and finishing at Box Hill Fort at the summit. The course is described as Britain’s toughest 10k, featuring r..

The Bell Challenge Day 5, organized by Running Events Devon, takes place on January 2, 2026, in Exmouth at Capel Lane. This 7-hour timed event features a mainly flat, accurately measured 5.3 km out-and-back course on a scenic, disused train line surfaced entirely with tarmac, classifying it as a roa..

Rhino Run in Wraysbury at Wraysbury Skiff and Punting Club is a 6-hour timed running event organized by Circuit Running. The course is an out-and-back with each lap about 3.28 miles. Runners can complete from 5k up to an ultra within the time limit, using a 5k turnpoint.An aid table at each lap end..

Based in Budleigh Salterton, the Walter Raleigh Round Half Marathon and Third Marathon offer two distances: 13.6 miles for the half and 8.5 miles for the third marathon. The route winds through quiet back lanes, unsurfaced county roads, little-known footpaths, the Otter valley, High Peak, the Jurass..

G3 no.1 is a trail running event in the G3 Series held at Newlands Corner, Drove Road, Guildford, Surrey GU4 8SE. Runners can choose between 10km and 15km distances, with the start line and event car park located at Newlands Corner. The event offers bundled options for multi-race participation: 3 x..

Dark Skies Surrey Hills is a night-time trail running event at Denbies Wine Estate in Dorking, set in the Surrey Hills. It offers a night-time 10-mile, 10K and 5K races, plus Canix events and 1K/2K kids’ races for 3–11 year-olds. The undulating, muddy courses wind through woodlands beneath the stars..

North Downs Way Ultra Run is a 30-mile guided trail from St Martha’s Hill, Guildford, Surrey, along and back along the North Downs Way, including the famous Box Hill. Organised by Running Adventures, the event is designed as an approachable introduction to ultra running, with the route cared for by..

Country to Capital is a point-to-point ultra marathon of 43 miles organised by Go Beyond. The race starts at the Shoulder of Mutton Pub in Wendover (HP22 6EJ) and finishes at the Stowe Centre next to the Little Venice canal basin in London, close to Paddington and Royal Oak Tube stations. The event..