Slateman Triathlon & Duathlon 2026

Starting in Llanberis, the heart of Eryri (Snowdonia)’s industrial heritage, this unparalleled race combines breathtaking scenery with epic challenges. 220 Tri Magazine has listed the Slateman among the world’s best triathlons, and it’s widely regarded as a bucket-list event for every triathlete — one not to be missed from any athlete’s calendar.

Go Beyond One Race – Join the Adventure Triathlon & Duathlon Series 2026

Introducing the Adventure Triathlon & Duathlon Series 2026, a two-event journey across North Wales’ most stunning and demanding landscapes: The Slateman and The Superfeet Sandman.

By entering both events with a Season Pass, you’ll become part of an exclusive community of multi-sport athletes taking on the full adventure. You’ll also unlock extra benefits designed to make your season unforgettable.

Season Pass Benefits

• Guaranteed entry into both The Slateman & The Superfeet Sandman
• Free limited-edition Adventure Series hoodie
• Exclusive series results and rankings — see how you perform across both races
• Choice of distance: Sprint, Standard, or Legend (70.3) triathlon, plus Duathlon options

Whether you’re aiming for your first multi-race season or chasing podium glory, the Season Pass is your ticket to a complete North Wales triathlon experience — from the mountains to the sea.

Ready to double your adventure?