Trail Running Calendar United Kingdom 2025-2026

OMM Lite is a competitive navigation and running event held at Grasmere Showground in the Lake District. Participants, either solo or in teams of two or three, navigate using a supplied map and compass to find checkpoints scattered around the Grasmere area. The goal is to collect as many points as p..

The Great Langdale 21 is a challenging 21km trail running event held in the scenic Great Langdale valley, based out of the New Dungeon Ghyll Hotel in the Lake District, UK. Featuring 850 meters of ascent, the course offers a technical route through stunning landscapes including Far Eastern Raven, Mi..

The Beat the Sunset 50km is a multi-terrain ultra marathon held in the Thames Valley, starting at Summerleaze Park in Maidenhead. The flat, single-lap course covers 50 kilometers with 235 meters of elevation, featuring 75% off-road terrain along the Thames Path, Jubilee River, and the Green Way. The..

The Navigation Trails - Ambleside will take place in Ambleside on Saturday 31 May 2025. You can run between 5 and 10 kilometers.

Muskie Madness is a challenging unmeasured 10k multi-terrain race held at Marine Academy Plymouth, UK. The course features a mix of road sections, which remain open to traffic, and wooded trail areas, including some hills that add to the race's difficulty. Participants can enjoy facilities such as t..

The Slieve Donard Race is a challenging 10km mountain running event held at Donard Forest Park, County Down. Featuring an 850m climb, the race demands strong fitness and navigational skills, especially in poor weather. Starting at Newcastle Centre and finishing on the pitches in Donard Park, the cou..

The Hardmoors 110 is a challenging 110-mile ultramarathon held along the Cleveland Way National Trail in North Yorkshire, UK. Starting at Filey Brigg Carpark, the single-stage trail race offers competitors 36 hours to complete the course. The route showcases the dramatic Cleveland Heritage coastline..

The Dartmoor Prison Break is a unique endurance event held at HMP Dartmoor, where participants aim to escape on foot and cover the greatest distance "as the crow flies" within a set time. Runners choose their own routes, restricted to public rights of way, while avoiding wardens who attempt to catch..

The Duddon Valley Fell Race, held at the Newfield Inn in Seathwaite, Duddon Valley, is a challenging category A fell running event. It features two courses: the Long race covers 18 miles with 6,000 feet of ascent over peaks including Harter, Hardknott, and Swirl How, while the Short race spans 10 mi..

The Grasmere Gallop is a vibrant outdoor running festival held in the scenic Lake District National Park, near Grasmere and Rydal Water. The event weekend features a variety of fully waymarked trail races catering to all ages and abilities, including distances of 5.7km, 10km, 17km, and a 42km marath..

The Sausage Dog Run in Wales, organized by Saturn Too, takes place at the scenic Dare Valley Country Park in Aberdare. This unique event features a 7-hour time challenge, allowing participants to choose their running distance, with a minimum of 5km. Runners can complete laps of 4.37 miles (7km) and..

The Cairngorms Ultra Trail is a 60km ultra running event set in the heart of the Cairngorms National Park, Scotland's largest national park known for its stunning highland scenery. Starting and finishing at Mar Lodge near Braemar, the course features 1006m of ascent and traverses remote, rugged terr..

Harewood 24 is an exhilarating 24-hour endurance event designed for both solo runners and teams, set in a stunning off-road forest environment. Participants can tackle 5-mile loops, either individually or in pairs of up to eight members. The event offers a unique challenge, allowing solo runners to..

The Ridgeway Challenge is an 86-mile (139 km) point-to-point trail running race along the entire length of The Ridgeway National Trail in England. Starting at Ivinghoe Beacon in Hertfordshire and finishing at the Avebury Stones in Wiltshire, the course follows a historic path over 5,000 years old. T..

The Three Castles 50km Ultra Marathon is a scenic race along the River Medway in Kent, England, starting in Rochester and finishing at Tonbridge athletics track. The flat course passes three medieval castles, charming villages, and lush countryside, following the Medway Valley Walk on marked towpath..

The Scafell Sky Race is a challenging 40km skyrunning event held in the Central Lake District, featuring 2800m of ascent on technical, single-track trails. This point-to-point race tests the speed and endurance of experienced and aspiring mountain runners as they traverse rugged Lakeland fells, vall..

The Norn Iron Ultra will take place in Ballintoy on Sunday 1 June 2025. You can run 26 miles.

The Chariots of Fire Beach Race is a popular 5km out-and-back running event held on the iconic West Sands beach in St Andrews. Celebrating the famous film "Chariots of Fire," the race invites runners to experience the scenic flat course on sand and surf, with the option to run barefoot through the w..

The Edenfield Fell Race will take place in Edenfield on Sunday 1 June 2025.

The Circuit du Sore Legs is a unique running event held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Participants run on a traffic-free 400-meter athletics track, with distances ranging from 5k (12.5 laps) to a 6-hour unlimited challenge, including 10k, half marathon, full marath..