Enter now and make sure you’re a part of Wales’ biggest festival of sport! Taking place over 3 days, on Friday you’ll tackle a 2.4 mile swim, before a 112 mile cycle on Saturday and a 26.2 mile marathon on Sunday. Click below to enter – last 60 places remaining!
Individual Events & Junior Entries
You can also be a part of the weekend by doing the events individually! Choose to take part in the swim, cycle and run, with various distances available so there’s something ideal for every level of athlete!
Three events over three days in some of the most scenic locations in the world. Can you beat the tough countryside course of Wales’ only 3 day triathlon? Discover more about the Long Course Weekend using the quick links below.
Enter Long Course
Take part in one of Wales’ biggest & toughest triathlons
About The Race
Find out what you’ll tackle over the three days
Your guide to where you need to be and when
Don’t miss a turn with our race maps for each stage
Be A Volunteer
Become an event hero and sign up to be a volunteer
Answers to the questions commonly asked by athletes
Well that's a wrap at Mumbles Duathlon! Amazing weather to match an amazing morning... Thank you to everyone who participated and all those who marshalled. The race year has officially began 🎉🎉🎉 Keep a look out on Facebook, Twitter and Instagram for all the fab pictures of you all! See you in May for Swansea Tri 🏅 ... See MoreSee Less
Want to know what the Long Course Weekend is all about? Then head over to our YouTube channel, where you can relive the action from 2016 and really get a taste of what it'll be like in Tenby next July!