Slateman Triathlon & Duathlon

Slateman Triathlon & Duathlon

Sunday, 14 June 2026

Llanberis, Gwynedd, UK

Follow event Triathlon Off Road/Trail Duathlon Relay

The Slateman Triathlon & Duathlon on 14 June 2026 features a swim surrounded with mountains, a bike course in the heart of the Snowdonia National Park and a run through an awesome slate quarry.

The distance options of the Slateman Tri 2026 are Sprint, Standard, Legend (70.3) and the Slateman Ultra Triathlon. The Ultra will be the UK's newest full-distance adventure triathlon, with over 2600m of elevation on the bike route and off-road trail running in the UNESCO World Heritage Dinorwig Quarries. The run leg has 2 different finish points depending on cut off times.

Team relay categories are available for both the Sprint and Standard race distances.

There is also a Standard Duathlon option.

Organiser

Always Aim High Events

Distances/Events

Triathlon (Swim + Bike + Run):
Sprint: 750m + 20K + 5.8K - solo/relay
Standard: 1.5K + 49.9K + 11.7K - solo/relay
Legend (70.3): 1.9K + 92.6K + 23.1K
Ultra: 2.4 miles + 180K + 44.5K (Chwarel finish) or 49.9K (Mynydd finish)

Duathlon (Run + Bike + Run):
Standard: 5.8K + 49.9K + 11.7K

Location map

The event base is on the field next to the Llanberis Community Centre. Refer to the event website for course maps.

Please note: the map location may be approximate. Refer to the event website for start lines and course maps.

Disclaimer

Running Calendar is an event listing site created as a resource for runners/walkers/athletes. We have no affiliation with the events listed, nor do we endorse or recommend them.

Listings are based on information found on the official event website, facebook page and/or from event directors.

We endeavour to keep these as up-to-date as possible, however we accept no responsibility or liability for any errors/omissions in the content of this site or that of any third party links provided in our listings. Information can be subject to change without notice.

Always check with the official event website and/or facebook page for the most recent information. 

This listing was last manually checked on 7 July 2025.

Nearby Events

More nearby events