Trail Running Calendar United Kingdom 2025-2026

Welcome to the most comprehensive guide to trail races in the UK for 2025-2026! Our curated list features an impressive 1301 trail runs across the enchanting landscapes of Scotland, and Wales. From the iconic trails of London's green outskirts to the rugged terrains near Birmingham, from Glasgow's scenic paths to Liverpool's historic routes, we've got every trail enthusiast covered.

Whether you're a seasoned trail runner looking for your next challenge or a newbie eager to explore the world of off-road running, our calendar is your one-stop solution. Dive deep into the details by searching for a specific location or simply browse through to discover new trail runs. Looking for all running events? Check out the complete Running Calendar United Kingdom on running.life.

The Centaur 100 Mile Ultra, organized by Phoenix Running, is a unique endurance event designed for both seasoned ultra-runners and first-timers. Set in a scenic wine estate, participants have up to 30 hours to complete the 100-mile challenge on a flat, one-mile loop. The event fosters a supportive a..

The Jurassic Coast 100 is an exciting running event taking place on June 21-22, 2025, along the stunning Jurassic Coast, a UNESCO World Heritage site. Participants can choose from various distances, including a 105-mile ultra, 100 km, 70 km, 50 km, and a 33 km challenge. The event offers a unique op..

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The West Highland Way Race is a challenging 95-mile ultra marathon that follows the scenic West Highland Way route in Scotland, starting at Milngavie Station and finishing in Fort William. Participants have a time limit of 35 hours to complete the race, which includes significant elevation gain of 1..

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The Gecko Gathering at Siblyback Lake is set to take place on June 21, 2025, featuring a variety of running events including 2.5k, 4.8k, and 9.6k distances, as well as the new 8-hour Siblython endurance challenge. Participants can complete laps around the scenic lake, with medals awarded for various..

The Three Shires Way Ultra & Marathon is a challenging running event set in the picturesque rural landscapes of Buckinghamshire, Bedfordshire, and Northamptonshire. Participants can choose between a 50-mile ultra and a marathon distance, both of which follow well-marked bridleways. The event is desi..

The SkyRun Eryri, also known as the Snowdon Skyrace, is a premier skyrunning event held in the stunning Eryri/Snowdonia region of Wales. This unique weekend of racing features multiple distances, including the 52KM 14 Peaks Ultra, 38KM Snowdon SkyRace, 27KM Copper SkyTrail, and 16KM Fairy Trail, cat..

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The Midsummer Mortimer Trail is an exciting running event featuring a 30-mile Ultra and a 15-mile route, set against the stunning backdrop of the Mortimer Trail from Kington to Ludlow Castle. This self-navigating adventure takes participants through the picturesque Marches of England, showcasing for..

Beyond London is a unique trail and ultra running event that invites participants to explore hidden trails in the capital. Offering two distances—25km and 55km—runners will experience iconic sights like Eltham Palace and Richmond Park while navigating a well-marked route that emphasizes the beauty o..

Race to the King is an exhilarating ultramarathon event set along the scenic South Downs Way and Monarch’s Way. Participants can choose from three challenges: the Coastal 50k, the Castle 50k, or the full 100k, which combines both loops. The event is designed to cater to both seasoned runners and new..

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Survivor Presents - The Last Lap is a challenging running event set in Charltons, UK, where participants have a 12-hour time limit to cover as much distance as possible. To qualify for the final "Last Lap," runners must complete 50 miles within this timeframe, competing against others for the fastes..

The Cotswold Way Ultra Challenge, taking place on June 21-22, 2025, offers participants a choice of distances including 100 km, 75 km, 50 km, 25 km, and a 10 km option in Cirencester. This event invites adventurers to walk, jog, or run through the picturesque Cotswolds, starting from a basecamp in C..

P24 - The Longest Attended Day is an endurance running event organized by Phoenix Running, taking place at Denbies Wine Estate in Dorking. Participants are challenged to run 1 mile on the hour, every hour, for 24 consecutive hours. The event features a flat, off-road trail and includes amenities suc..

The Hawkhurst 10K & 5K is a vibrant running event held in the picturesque village of Hawkhurst, Kent. Designed for the whole family, the event features two main race distances—10K and 5K—along with a free junior race for children aged 4 to 12. Participants can enjoy a scenic course that includes tra..

The Smugglers Pirate and Corsair event features two exciting races: a half marathon and a full marathon, set against the stunning backdrop of the South West Coast Path. Participants can choose to run as either a Pirate or a Corsair, with the Pirate Half marathon running from Lands End to the Cape an..

The Dunstable Downs Half Marathon is a scenic trail running event set in the picturesque National Trust's Dunstable Downs estate. Scheduled for June 22, 2025, this challenging race features an entirely off-road route that spans 21.2 kilometers with an elevation gain of over 450 meters. Participants ..

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The LRC Tees Trailtastic is a trail running event taking place in County Durham, designed for those seeking an off-road adventure rather than a competitive race. Participants can choose between a 9-mile circular course and a 3.5-mile route, both of which traverse scenic sections of the Teesdale Way,..

The Midsummer Murder event is a thrilling trail running challenge set in the picturesque Hambleden Valley, located between Henley on Thames and Marlow. Participants can choose between a 10-mile course and a half marathon, with the latter measuring 14.3 miles. Both routes feature stunning scenery and..

The Snickerthon is a fun and challenging running event held at Chase Water Country Park and Visitor Centre. Participants can choose from various distances, including approximately 5K, 10K, Half Marathon, and Marathon. The course features a multi-lap format, with each lap covering 5K through scenic p..

The 3 Beaches Half Marathon Hebrides is a multi-terrain running event taking place on the Isle of Benbecula in the Outer Hebrides. Scheduled for June 22, 2025, participants can run solo or in pairs, with a unique "Community Pairs" option available. The course features scenic views as runners travers..

The Coombe Keynes 10K is a scenic trail race celebrating its 10th anniversary in 2025. Set in the picturesque village of Coombe Keynes, the race takes participants through the historic Lulworth Estate, featuring a mix of chalk downland and woodland paths. The 10km course offers stunning views and is..