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Slateman Triathlon

Name: Slateman Triathlon
Start: 2026-06-14
End: 2026-06-14
Location: Llanberis

location_city Llanberis

flag United Kingdom

calendar_today 14 Jun, 2026

kayaking Multisports

language Official Website

About the Event

Tackle one of the world's most spectacular and challenging triathlons at the Slateman Triathlon & Duathlon on Saturday, 14th June 2026. Set in the heart of Eryri (Snowdonia) National Park, this iconic Welsh adventure offers four epic distances—from a Sprint to a Full Ultra—all starting in the historic village of Llanberis. The legendary course weaves through the awe-inspiring mountain landscape, featuring a crisp lake swim, a demanding bike ride through the Llanberis Pass, and a brutally beautiful run on rugged trails. Consistently ranked among the globe's best triathlons, it’s a true bucket-list event known for its stunning scenery, unique slate finisher mementos, and incredible community atmosphere. Secure your spot for the ultimate 2026 triathlon in Wales, or double the adventure with a Season Pass for the full mountain-to-sea series.

Races Offered

Legend

Jun 14, 2026

straighten

Distance — 92.6 km 23.1 km

terrain

Type — Triathlon

timer

165 days remaining

Slateman Ultra

Jun 14, 2026

straighten

Distance — 3.9 km 180 km 44.5 km

terrain

Type — Triathlon

timer

165 days remaining

Sprint

Jun 14, 2026

straighten

Distance — 20 km 5.8 km

terrain

Type — Triathlon

timer

165 days remaining

Standard

Jun 14, 2026

straighten

Distance — 49.9 km 11.7 km

terrain

Type — Triathlon

timer

165 days remaining

Standard Duathlon

Jun 14, 2026

straighten

Distance — 5.8 km 49.9 km 11.7 km

terrain

Type — Triathlon

timer

165 days remaining

Weather Overview

These values represent the 3-year monthly averages for June in Llanberis.

Temp (°C)

Feels Like (°C)

thermostat 11.1° / 17.4°

wb_sunny 8.5° / 14.8°

Wind (km/h)

Humidity (%)

air 14.3 /

water_drop 78.5%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 11.1° / 17.4°

wb_sunny 8.5° / 14.8°

air 14.3 km/h

water_drop 78.5%

About Llanberis

Llanberis is in North Wales, 7 miles away from Caernarfon.

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Slateman Triathlon

About the Event

Races Offered

Legend

Slateman Ultra

Sprint

Standard

Standard Duathlon

Weather Overview

About Llanberis

Hotels & Places to Stay

Nearby Races

Cadair X Half Marathon

Jones o Gymru Anglesey Half Marathon and 10k

MTC CYMRUN

THE ROC Wales

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