Trails & Tarmac Backyard Ultra

NOV
15
2025
Test your limits at Trails and Tarmac 12 hour Backyard Ultra in Crickhowell, featuring a scenic 4.2 mile loop of trail and tarmac completed each hour. Stay for the final sprint to claim the trophy or earn medals for every loop and 32 miles.
Sat 15 Nov 2025
4.2 Mile Loop 12 Hours

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Event overview

Trails & Tarmac 12hr Backyard Ultra is a 12-hour backyard ultra held on 15 November 2025 in Crickhowell, Powys. The event uses a 4.2 mile loop that is roughly 50/50 trail and tarmac. Competitors complete each loop within an hour; the first eleven loops follow the standard format and the twelfth loop is a sprint race to determine the winner. The race is capped at 12 hours. A trophy is awarded to the winner. Anyone who completes a loop receives a medal, and there is a special medal for reaching 32 miles (ultra distance). The minimum age is 17. Entry opens 22 January 2025 and closes 8 November 2025. The published entry fee is £75.

Rules, support and facilities

Course rules include mandatory presence in the starting corral at the bell, starting each loop on the hourly bell, no late starts, no leaving the course during a loop except for restrooms, and no non-competitors on the course. Personal aid during a loop is not allowed; common aid stations are provided at headquarters. Artificial aids, including trekking poles, are not permitted. Timing is available. Supporter rules include no supporters in the corral and no phone calls to or from runners on the course except in an emergency. The event provides food and drink, medics on site, showers and toilets, event photography for free post-event download, and parking at HQ for a £5 fee (parking fee enters a ballot draw). Visit the organization's website for the most recent information.

12 hr
12 Hours
4 mi
4.2 Mile Loop

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