Ultra Trail Snowdonia by UTMB 2027

Ultra Trail Snowdonia by UTMB 2027 takes place in Llanberis, Snowdonia National Park, Wales, United Kingdom: May 14 – 16, 2027. Add it to your calendar from the top of this page so you don’t miss it.

Ultra Trail Snowdonia by UTMB takes place in Llanberis, Snowdonia National Park, Wales, United Kingdom. There are 2 other trail races within 250 km, shown on the map, if you want to combine them in one trip.

Ultra Trail Snowdonia by UTMB has 4 distances: 25K, 56K, 104K, and 164K. The longest is the 164K.

Yes: Ultra Trail Snowdonia by UTMB is part of UTMB World.

For the 164K, plan around 24 weeks of specific training if you already run regularly. For the 25K, about 12 weeks are enough. Build up long runs with climbing and add two short strength sessions a week.

It is not tagged as a technical race in our data, so check the course profile on the official website and train on trails with climbing like the race’s.

For its terrain, choose shoes with good grip and enough cushioning for the distance. Good options: Hoka Mafate 5, The North Face Altamesa 500 v2, and Altra Olympus 275 HiLo. You will find them, and the rest of the gear, in “How to prepare” below.

Registration is on the official website (snowdonia.utmb.world). Popular races sell out, so check the dates early, and mark it as “I want to register” at the top of this page to keep it in your races.

Look for accommodation in or near Llanberis. The accommodation map on this page shows hotels and apartments around the race, with prices for your dates.