Join us for the Dorney Lake Triathlon on Saturday 26th September 2026 In support of Macmillan Cancer Support We’re delighted to have Macmillan as our RunThrough Triathlon Partner in 2026. Macmillan has spent more than 100 years helping people living with cancer. From the moment someone is diagnosed, we're there with all the information, support and guidance they need, to help everyone with cancer live life as fully as they can.
See it on the map, check who's going and RSVP — free on iPhone.
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