Take part in the 10K or half marathon on Tiree, Mull and Coll in the same year and you can enter The Hebridean Tri Island Challenge.
If you are entering and have a place in Tiree half or 10k https://www.tireefitness.co.uk/events/10k please register on https://collhalfmarathon.org.uk/hebridean-tri-island-challenge
Trophies will be awarded to the fastest combined time for the three events.