Trails & Tarmac Backyard Ultra

SEP
19
2026
Test your limits in the Trails & Tarmac Backyard Ultra set in the scenic Black Mountains around Crickhowell. Run repeated 4.2 mile loops on mixed trail and tarmac with one hour to complete each one as the last person standing wins.
Sat 19 Sep 2026
4.167 Mile Loop

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Event details

Trails & Tarmac Backyard Ultra is scheduled for 19 September in Crickhowell, Powys, set in the Black Mountains. The route is a mix of trail and tarmac, described as 50/50, with one gradual climb, a short steep section and otherwise relatively flat terrain. The event lists an entry fee of £100 and a minimum age of 17. Facilities at the HQ include medics, showers and toilets, photographers during daytime, parking at HQ (£5), basic camping with nearby toilets, and a downloadable GPX file for the route.

  • 4.2-mile loop (listed elsewhere as 4.167 miles)
  • 32 miles qualifies for an ultra medal

Race format and rules

The event uses a backyard ultra format with repeated loops. Each loop must be completed within one hour to count. All competitors must start each loop at the bell from a starting corral; starts are one hour apart with short countdowns before each loop. Common aid stations are allowed; personal aid during a loop is not. Non-competitors are not permitted on the course. Artificial aids, including trekking poles, are prohibited. The winner is the last person to complete a loop; competitors who finish before 32 miles are recorded as DNF in the published results. Timing will be provided and the race is open-ended. Additional on-site services include hot food after the fifth loop. Visit the organization's website for the most recent information.

4 mi
4.167 Mile Loop

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