Adventure Series 2025 Slateman Standard Triathlon

Swim in the incredible fresh water of Llyn Padarn in the shadow of Yr Wyddfa (Snowdon) surrounded by the history of Slate Mining in the Welsh hills.

The cycle route takes in some of the most iconic views in North Wales. Begin the cycle by turning right out of transition and head towards Caernarfon. As you flow around the course towards Beddgelert make sure you keep an eye out on your left because you’re circumnavigating Yr Wyddfa! Once you’re through the beautiful, quaint village of Beddgelert, you’ve got one last challenge to come. You must now cycle up the narrow and winding Nant Gwynant Pass and return to the top of Pen y Pass. Make sure you take in some of the most spectacular views in the country, before you descent all the way back to Llanberis and transition.

The Slateman run starts off relatively easy but no less beautiful than the rest of the route taking in the historic Dolbadarn Castle, but as you run past Llyn Peris at the foot of the Dinorwic Slate Quarry, don’t lose your nerve when you see what's to come. A 2km climb up the zig zags through the quarry takes your legs and your breath away. Carrying on through this most awesome man made landscape for another 1.5km you then come to the descent into the forest. Head towards Fachwen and a short section of road, followed by a steep descent once more into the trees. You will then make your way along the beautiful trails of Parc Padarn and past the Old Quarry Hospital as you make your final descent down to the field and the final straight to the finish line, you may, by now, have some idea of what it was like to be a real Slateman.