Trails & Tarmac Summer Back Yard Ultra

Trails & Tarmac Summer Back Yard Ultra

Friday, 19 September 2025

Crickhowell, Powys, Wales, UK

Follow event Run/Walk Road/Path/Park Off Road/Trail

The Trails & Tarmac Summer Back Yard Ultra starting on 19 September 2025 is a last one standing endurance race in the Black Mountains, Wales.

A Backyard Ultra is a form of ultramarathon where competitors must consecutively run a 4.2 mile course in less than one hour, every hour. When each lap is completed, the remaining time within the hour is used to recover and replenish for the next hour's race. The race finishes when one person completes one more lap than anyone else.

Based just outside Crickhowell, the course is 50/50 Trail and Tarmac, with only one gradual climb and a short steep section, the rest is relatively flat terrain, which means fast.

Medals will be given to anyone who reaches 32 miles i.e. an Ultra. The last person standing will be allocated the winner's trophy.

Please refer to the event website for further details including associated BYU rules.

Organiser

Limitless Trails

Distances/Events

1 x 4.2 mile lap per hour - Last one standing format

Location map

The event starts and finishes near Crickhowell. Refer to the event website for corral and course map.

Please note: the map location may be approximate. Refer to the event website for start lines and course maps.

Disclaimer

Running Calendar is an event listing site created as a resource for runners/walkers/athletes. We have no affiliation with the events listed, nor do we endorse or recommend them.

Listings are based on information found on the official event website, facebook page and/or from event directors.

We endeavour to keep these as up-to-date as possible, however we accept no responsibility or liability for any errors/omissions in the content of this site or that of any third party links provided in our listings. Information can be subject to change without notice.

Always check with the official event website and/or facebook page for the most recent information. 

This listing was last manually checked on 26 June 2025.

Nearby Events

More nearby events