A mountain ultra in the Black Mountains area of Bannau Brycheiniog (Brecon Beacons) National Park covering approximately 32 miles (51 km) with significant ascent across open upland terrain. The route climbs onto the Black Mountains massif, following a mix of mountain paths, ridgelines and grassy tracks between valleys and summits. Sections of the course traverse exposed high ground with sustained climbs and descents. The course is marked with checkpoints and aid stations positioned at key access points.