The Brutal Extreme Triathlons
Llanberis, United Kingdom • 19-22 Sep 2026
The Brutal Extreme Triathlons : Llanberis, North Wales
The Brutal Extreme Triathlons are multi-distance triathlon events held in Llanberis, with swimming in Llyn Padarn and mountain running on Yr Wyddfa (Snowdon) via the Llanberis Path. The event offers options as solo or relay teams of 2 to 4 members.
Distances available:
- Half (Canol): 1.2 mile swim, 56 miles bike, 5 mile lake lap then mountain
- Full (Mawr): 2.4 miles swim, 112 miles bike, 15 miles lake laps then mountain
- Double and Triple: multiple laps of the same 28 mile bike, 1.25 km swim lap and 5 mile lake lap formats apply
Course notes describe a 1.25 km swim lap in Parc Padarn, a 28 mile bike lap on open roads including a climb over Pen y Pass, and a 5 mile lake lap with trails, rocks and a waterfall. The mountain section is approximately 9 miles round trip on a clear path. Water temperature is typically 16–18°C.
Aid stations are placed on the bike, on the run and at HQ and provide sports nutrition and snacks. Support crews are required for Double and Triple entries; they must attend the briefing and follow rules for safe support on the road and mountain sections. Mandatory kit lists are specified for athletes and for support crews. Trophies are awarded to the first three male and female finishers in each race. Visit the organization's website for the most recent information.