Tal-Y-Llyn Eliminator Swimrun
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Tal-Y-Llyn Eliminator Swimrun
The Tal-Y-Llyn Eliminator Swimrun is a lap-based swimrun held at Tal Y Llyn on the shore of Llyn Mwyngil beneath Cadair Idris in Eryri Snowdonia National Park. Each lap combines running on mainly hard surfaces with two open-water swims via defined exit points.
- Each lap: 5.2 km (4.6 km running, 600 m swimming)
- Up to six laps: 31.2 km total
Running is generally on paving and tarmac, fairly flat with small undulations; the two swim exit points include very short trail sections. For the 2027 course busy road sections have been removed. Organisers publish indicative lap times, starting at 40 minutes for lap 1 and reducing to 32 minutes for lap 5, with lap 6 listed as an open final effort.
Race HQ is based at the Tyn Y Cornel Hotel, LL36 9AJ. Competitors are expected to have basic swimrun kit: wetsuit, trail running shoes and whistle. At registration participants collect a race bib and swim hat. There is an option to race "skins" style without a wetsuit if conditions permit.
The event is affiliated with British Swimrun. Past editions recorded new course records in 2024 across male, female and team categories. A cooler variant of the event is noted with water temperatures around 10 to 11 degrees Celsius and a date to be confirmed. Visit the organization's website for the most recent information.
