Across The Cynllaith Hillwalk

Trefonen, United Kingdom • 23 May 2026

Event Overview

The Across the Cynllaith Hillwalk offers participants a chance to traverse the border between Shropshire and Mid Wales. This event is open to both walkers and runners, featuring a route that crosses the Afon Cynllaith and passes through a variety of landscapes including fields, woods, lanes, and moorland. The course utilizes public rights of way as well as private paths made accessible specifically for the event.

Distances and Routing

Participants can choose between two primary distances:

  • 16 miles
  • 10 miles

The long route involves approximately 987 meters of total ascent. Both options start and finish at Trefonen Village Hall and include a mandatory check-in at Llansilin. The 10 mile route is circular, while the 16 mile route follows a figure of eight pattern with Llansilin at the center. Participants have the flexibility to choose their preferred distance on the day of the event. Both routes conclude by following the Offa’s Dyke National Trail.

Logistics and Facilities

The routes are marked with tape and arrows, and written directions are provided as a backup. Checkpoints are located at Llansilin and Craig Sychtyn. Water is available at various points along the course, with additional refreshments such as tea, coffee, biscuits, and cake served at specific locations and the finish line.

Parking is provided at Trefonen Village Hall and the nearby playing field. Due to the presence of livestock in fields and the inclusion of many stiles, dogs must be kept under close control. Participants are advised to carry wind and waterproof clothing and wear footwear with suitable grip for steep or slippery sections. Visit the organization's website for the most recent information.

Race information

16 mi
Long Route
10 mi
Short Route
Visit the organization's website for the most recent information.
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