Trails & Tarmac Backyard Ultra

The Trails & Tarmac Backyard Ultra, organized by Limitless Trails, is a challenging endurance event held near Crickhowell in the scenic Black Mountains, Powys, UK. Participants run a 4.2-mile (approximately 4.17 miles in some editions) loop combining equal parts trail and tarmac, featuring mostly flat terrain with one gradual climb and a short steep section, promoting fast running. The race follows a backyard ultra format where runners start each loop hourly and must complete it within the hour to continue.

Medals are awarded to those reaching 32 miles (ultra distance), and the last runner standing receives a trophy. The event offers on-site support including food, hydration, medical aid, showers, and toilets, with a friendly yet competitive atmosphere. Visit the organization's website for the most recent information.