Twmpa & Hay Bluff loop from Llanthony Priory — Bannau Brycheiniog (Brecon Beacons) National Park

Embark on a challenging Twmpa & Hay Bluff loop from Llanthony Priory, a difficult hike spanning 17.6 miles (28.4 km) with a significant 2589 feet (789 metres) of elevation gain, typically taking around 8 hours and 26 minutes to complete. You will traverse varied terrain, from steep ascents out of Llanthony to exposed ridgelines that can be boggy in places, especially near Twmpa. The route offers spectacular panoramic views over the Wye Valley and the Black Mountains, with the historic Llanthony Priory providing a picturesque start and finish. Keep an eye out for wild ponies grazing on the open moorland.

Before you set out, be prepared for the strenuous nature of this loop, which involves several steep climbs, particularly to Hay Bluff and Twmpa. Proper walking boots are essential due to the wet and peaty sections, and sure-footedness is a must. The exposed ridgelines mean you should expect strong winds, and weather conditions can change quickly in the Bannau Brycheiniog National Park. While the trail starts from Llanthony Priory, which has a pub and campsite, always carry a map and know how to use it, as mobile signal can be intermittent.

This loop is a highlight in the Bannau Brycheiniog (Brecon Beacons) National Park, taking you to the iconic peaks of Hay Bluff and Twmpa (also known as Lord Hereford's Knob). You will experience the dramatic Black Mountains scenery and may even follow sections of the historic Offa's Dyke Path. Starting from the 900-year-old ruined Augustinian Llanthony Priory adds a unique cultural dimension to your adventure, blending natural beauty with a rich past. This trail is ideal for experienced walkers seeking magnificent views and diverse mountain terrain.