Logo

Trails & Tarmac Backyard Ultra

Crickhowell, United Kingdom • 19 Sep 2025

Trails & Tarmac Backyard Ultra (Summer BYU) takes place near Crickhowell in the Black Mountains, Powys. The course features a 4.167-mile loop that is half trail and half tarmac, with a single gradual climb and a short steep section. Designed for speed on largely flat terrain, the event uses an open-ended BYU format: loops are started hourly, and the winner is the last person to complete a loop.

Medals are awarded for reaching 32 miles, with a trophy for the last runner standing. Competitors are fed and watered, with hot food after early laps. On-site medics, showers and toilets; photographers; camping nearby; HQ parking (£5); GPX route available. Visit the organization's website for the most recent information.

United Kingdom Wales Crickhowell

Race information

Website Registration
4 mi
4.167 Mile Loop Repeated Hourly Until Last Person Standing
Visit the organization's website for the most recent information.
Trail runs nearby

Ross On Wye 10K Riverbank Run

Ross-on-Wye - 24 mi from Crickhowell

The Ross on Wye 10K Riverbank Run is a popular running event held in Ross-on-Wye, Herefordshire, featuring chip-timed 10K and 5K races along with a family fun run. The course is flat and multi-terrain, running alongside the scenic River Wye, incorporating river paths with grass and mud sections. The..

Pegasus - The RIDUM

Caerphilly - 19 mi from Crickhowell

The RIDUM 2025 is a 30-mile ultra around the Rhymney Valley Ridgeway Walk in South East Wales, near Caerphilly. The route climbs 4,252 feet through lanes, trails and woodland, with ridge-top views and Mynydd Machen (362m) as the high point. Expect a friendly Pegasus atmosphere, with three checkpoint..

Saturn Running - Aberdare

Aberdare - 16 mi from Crickhowell

...

The Fraggle Run in Aberdare, hosted by Saturn Running, is a 7-hour time challenge event set in the scenic Dare Valley Country Park. Participants can choose their distance, starting from a minimum of 3km, with laps measuring approximately 4.37 miles (7km) on well-maintained footpaths offering beautif..

Credenhill Canter

Credenhill - 21 mi from Crickhowell

The Credenhill Canter is a multi-terrain 10K race organized by Wye Valley Runners, taking place in Credenhill, Hereford. The course winds through country lanes and woodlands, offering a scenic and varied running experience. The race starts near the local church and finishes at the Credenhill Social..

Monross Trailblazers - Blaze The Biblins

Symonds Yat - 21 mi from Crickhowell

The Monross Trailblazers - Blaze the Biblins is a trail running event held on October 5, 2025, at Biblins Youth Campsite near Doward, Ross-on-Wye, within one of Britain's finest Areas of Outstanding Natural Beauty (AONB). Covering approximately 6 miles (10k), the course features a mix of climbs, fla..

Saturn Running - Aberdare

Aberdare - 16 mi from Crickhowell

...

The Scare Bear Run in Aberdare, hosted by Saturn Running, is a unique 7-hour time challenge event set in the scenic Dare Valley Country Park. Participants can choose their distance, starting from a minimum of 3km, with laps of approximately 4.37 miles (7km) on well-maintained paths offering beautifu..