Mountains of the Merfynion

Mountains of the Merfynion 2025 is a demanding ultra-endurance event challenging riders with mixed surfaces and relentless climbs. The route features a dynamic blend of gravel, tarmac, and singletrack, testing technical skill and resolve. Starting at Llwyn Celyn on 6th September 2025, the race winds through the Welsh mountains, offering scenery and challenging terrain. Riders encounter steep ascents, technical descents, and diverse surface conditions throughout the course. This single-stage, unsupported adventure demands careful preparation and resilience. Cyclists must be self-reliant and resourceful, embracing the unpredictable weather and rigorous physical challenges presented along the varied, scenic, and testing route with determination.