Trail Running calendar near Llanfairpwllgwyngyll 2025-2026

We have found 91 Trailruns within 80 miles of Llanfairpwllgwyngyll. See below where and when you can find the races.

The Montane Dragon's Back Race is a renowned six-day ultra marathon traversing Wales from Conwy Castle to Cardiff Castle. Covering approximately 380 kilometers with 16,400 meters of ascent, it is considered one of the world's toughest mountain races. Participants face challenging terrain, including..

The Dee Way 120 is an ultra-distance running event that spans approximately 120 miles along the scenic River Dee, from Llanwchllyn to Prestatyn. Participants can choose between the full race or a shorter 60-mile option, which starts at Corwen. The event features a 50-hour time limit for the 120-mile..

The RunThrough Snowdonia Sea2Sky Trail Races, held in September 2025 at Barmouth, UK, offer two challenging distances: 25k and 53k. Set in the stunning landscape of Snowdonia, participants can enjoy breathtaking trail views throughout the course. The event features a chip-timed, marshalled route wit..

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The Battle of the Borders is an exciting trail running event set in the picturesque Shropshire Hills, offering participants the choice of a Half Marathon (13.1 miles) or a full Marathon (26.2 miles). This single-lap course begins and ends at Carding Mill Valley, a National Trust area, providing stun..

The Yr Wyddfa Ultra 50 is a challenging 45-mile mountain ultramarathon held in Snowdonia National Park, Wales, featuring 3,254 meters of ascent. Organized by GB Ultras, the race takes participants through rugged trails, including iconic peaks like Snowdon (Yr Wyddfa), Tryfan, Glyder Fach, and Glyder..

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The Yr Wyddfa Ultra 100 is a challenging 102-mile ultramarathon held in Snowdonia National Park, Wales, featuring 5,788 meters of ascent across stunning mountainous terrain. The race starts and finishes in Betws-y-Coed and includes 10 well-supported checkpoints offering refreshments and medical aid...

The Across Wales Walk is a classic challenge walking event held annually, now in its 62nd year. Participants walk or run a demanding 45-mile linear route across Wales, starting at Anchor Bridge on the English border near Clun and finishing at Clarach Bay near Aberystwyth on the Welsh coast. The cour..

The 2 Hillforts Hill Race is an exciting running event set to take place in 2024, starting and finishing at Plas Dolben Farm in Llangynhafal. Participants will tackle a challenging course that spans just under 9 miles, featuring a significant ascent of 2500 feet as it navigates the scenic Hillforts..

The Sandstone Trail Races feature a unique trail running experience in Cheshire and North Wales, offering two concurrent point-to-point races. The event starts at Bickerton Hill National Trust Car Park and concludes at Kelsall Hill Equestrian Centre, providing excellent facilities for participants a..

The Stretton Skyline is a challenging fell running race held near Church Stretton in the West Midlands, organized by Telford Athletics Club. Covering 30.5 km with a total ascent of 1357 meters, the course demands strong navigational skills as it is only partially marked. The route includes rugged te..

The Snowdonia Mountain Skills Weekend, organized by Running Adventures, is a challenging trail running event held in the Nantlle Valley from September 12-14, 2025. Designed for experienced runners, participants will learn mountain navigation, scrambling, and safety skills through guided runs on rugg..

The Tour des Marches Challenge Walk is a popular annual event held at Wistanstow Village Hall in Shropshire, England. Participants can choose from three distances: 12, 18, or 26 miles, with routes passing through scenic areas including Clun and Bishop's Castle, within the Shropshire Hills Area of Ou..

Defeat Delamere is a running event held at Delamere Forest, Frodsham, featuring multiple race distances including 5k, 10k, 16k, and a mini-miler for children aged 3 and above. The course offers a scenic and challenging route through the forest with varied terrain, including downhill stretches and st..

The Abersoch Half Marathon is a scenic 13.1-mile race held in the charming seaside village of Abersoch on the Llyn Peninsula, North Wales. The course primarily follows roads through the villages of Llanengan, Llangian, and Sarn Bach, culminating in an exhilarating final kilometer along Abersoch Beac..

Mullaghcleevaun is a challenging mountain running event organized by the Irish Mountain Running Association, set in Wicklow. Participants will navigate a 12.10 km course with an ascent of 800 meters, requiring advanced navigational skills due to the terrain. The race emphasizes safety, mandating spe..

EcoTrail Wicklow is an exciting trail running event set in the stunning landscapes of Wicklow, Ireland. Scheduled for September 27, 2025, the event features multiple race distances, including 80K, 46K, 30K, 19K, and 10K, catering to runners of various skill levels. With a strong emphasis on eco-resp..

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The Town to Tower 10K is an uphill race that takes participants from the charming market town of Ruthin to the summit of Moel Famau, located in the stunning Clwydian Hills. This unique 10K route offers a challenging experience for runners of all abilities, culminating at over 550 meters above sea le..

The Delamere Forest Wildwood Trail Series offers a scenic and challenging trail running event in Cheshire, featuring a Half Marathon and 10K race. Set within the picturesque Delamere Forest, the course includes dense woodlands, rolling trails, steep climbs, and muddy sections, providing a rewarding..

The Bridgeathon, organized by PFW Running, is a scenic running event held along the flat Lancaster Canal towpath in Preston, Lancashire. Participants can choose from 10K, half marathon, marathon, and ultra (32 miles) distances. The marathon route features 43 bridges to cross or pass under, adding a..

October 2025

The Loop Ultra is a 50km (32 miles) trail running event held at Camp Plas, Plas Dolanog near Welshpool in the Cambrian Mountains of Mid Wales. This challenging ultra takes runners through remote, scenic trails, forest tracks, and ancient paths, including stunning views around Lake Vrynwy and the Gly..