Slateman Triathlon & Duathlon
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Slateman Triathlon & Duathlon 2026
The Slateman Triathlon & Duathlon is a multi-sport race in Llanberis, in the heart of Eryri (Snowdonia). It includes both triathlon and duathlon formats and is the first event in the organiser's Adventure Series. The 2026 event is staged in June; organisers note warmer water temperatures at this time. The event is bilingual, with signs, registration and commentary available in English and Welsh.
The event village includes music, shopping, food and chill-out zones. The programme lists family finishes, marshals and on-course support, signage and pick-up vehicles. Finishers receive event mementos. Timing is by chip with live online results.
Event date: 14 Jun 2026. Closing date for entries: 12.06.2026. Visit the organization's website for the most recent information.
Distances
- Sprint: Swim 750 metres, Bike 20.2Km, Run 5.8Km
- Standard: Swim 1500m, Bike 49.9km, Run 11.7km
- Legend (70.3): Swim 1,900 Metres, Bike 92.6Km, Run 23.1KM
- Ultra (140.6) Full Distance: Swim 2.4 Miles, Bike 180KM, Run 44.5KM (Chwarel finish) / 49.9KM (Mynydd finish)
- Standard Duathlon: Run 1 5.8km, Bike 49.9km, Run 2 11.7km