Pegasus - The RIDUM
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The RIDUM 2026 : Event overview
The RIDUM is a 30-mile ultra marathon scheduled for September 5, 2026. The route follows the Rhymney Valley Ridgeway Walk and starts and finishes at Parc Penalta. The course includes roughly 4,250 feet of elevation and is mainly off-road, with about 90% trail and 10% road. There are three fully stocked checkpoints along the route.
Course and logistics
The Rhymney Valley Ridgeway Walk is a waymarked circular footpath around the ridge tops of the Caerphilly basin and the River Rhymney. The route includes lanes, trails and woodland, and passes over Mynydd Machen, the highest point on the trail at 362 metres (1,188 ft). Checkpoints are staffed and offer snacks, fresh fruit, hot and cold drinks, seating, power banks and music; dietary requirements can be accommodated. There are no official time limits for reaching the finish.
Participants are required to carry specific kit, including appropriate footwear, a 1 litre water carrier, a mobile phone, a headlamp or other light source, a foil blanket, a waterproof jacket and a rucksack. Route files are provided via Plotaroute for download and navigation. The event includes a post-race medal and post-race care. Visit the organization's website for the most recent information.
