Slateman Triathlon & Duathlon

Slateman Triathlon & Duathlon

Sunday, 13 June 2027

Llanberis, Gwynedd, UK

Follow event Triathlon Off Road/Trail Duathlon Relay

The Slateman Triathlon & Duathlon on 13 June 2027 is based in the mountains of Eryri and Snowdonia National Park.

The swim is in the clear waters of Llyn Padarn; the bike leg heads into the mountains and takes on the legendary Llanberis Pass; the run takes athletes through the historic Dinorwig slate quarries to a finish line in the heart of Llanberis.

Distance options of the Slateman Tri 2027 include Sprint, Standard, Legend (70.3) and the Slateman Ultra Triathlon (140.6) with over 2600m of elevation on the bike route and off-road trail running with 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 (140.6): 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.

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This listing was last manually checked on 21 August 2026.

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