Triathlon  | Duathlon  | Slateman 2025

Slateman 2025 Standard Duathlon


08 Jun 2025




Opening Date: 19.07.2024


Route Description

With so much history your first tough 5.8 km run will have loads to keep you motivated as your legs complain. Starting under the finish arch to run on some of the best trails around, you’ll go past Vivian Quarry, and head towards Dinorwic, before taking a short section of road in the direction of Fachwen. You’ll then turn steeply downhill through beautiful forests, with glimpses of Yr Wyddfa (Snowdon), past the Quarry Hospital and back the way you’ve come and diverting towards transition.

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 final 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 is 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.


Tier 1

Ends: 21/07/2024

  • £75.99

Tier 2

Ends: 25/05/2025

  • £85.99

Tier 3

Ends: 06/06/2025

  • £95.99

Important Information

What's Included?

Minimum Age


Wave Start Times

Transition times

Cut Off Times


Opening Date: 19.07.2024


Are you in?

See Start List

Final Instructions

Will be sent out and available to download 1 week before the event.

We are proud that all our events are bilingual. Signs, registration and commentary are available in English and Welsh.

Event Partners Slateman Triathlon & Duathlon 2025

Working with local communities