Embrace the legendary challenge of North Wales at the Excalibur Trail Races on Sunday, May 10, 2026. Set on the spectacular Clwydian Range, this tough and beautiful event offers a true test for trail and fell runners with three iconic distances: a formidable marathon (42 km), a challenging half marathon (21 km), and a rugged 10km, all featuring significant, relentless ascent through ancient, Arthurian-steeped landscapes. The routes are a classic tour of the Range's heather-clad peaks, offering breathtaking views and demanding climbs that will push your endurance and reward you with a profound sense of achievement. More than just a race, it's an event with a powerful purpose, organized by and in support of Running Head First CIC, a not-for-profit dedicated to improving mental and physical health through community running, meaning your entry directly contributes to vital local programs. With its raw, authentic fell-running character, stunning scenery, and a deeply supportive, community-focused ethos, Excalibur is a must-do for any serious trail runner seeking a meaningful challenge. Whether you're conquering the full marathon or testing your mettle on the 10km, you'll be part of a special day that celebrates both personal resilience and collective good in one of Wales' most dramatic landscapes.
Races Offered
10K
May 10, 2026
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Distance —
10K
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39 days remaining
Half Marathon
May 10, 2026
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21.1K
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39 days remaining
Marathon
May 10, 2026
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42.2K
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39 days remaining
Weather Overview
These values represent the 3-year monthly averages for May in Ruthin.
Temp (°C)
Feels Like (°C)
thermostat9.1° / 16.7°
wb_sunny6.7° / 14.0°
Wind (km/h)
Humidity (%)
air11.5 /
water_drop78.7%
Temp (°C)
Feels Like (°C)
Wind (km/h)
Humidity (%)
thermostat9.1° / 16.7°
wb_sunny6.7° / 14.0°
air11.5 km/h
water_drop78.7%
About Ruthin
Learn more about the host city, Ruthin.
Ruthin is a town in Denbighshire, Wales and has some of the finest black and white buildings in Wales. Ruthin School is located in the town and is one of the oldest independent schools in the United Kingdom, having been founded in 1284.
