JLL Property Triathlon 2025

The JLL Property Triathlon is one of the UK’s most vibrant and inclusive sporting events tailored for the property industry. Held annually at Dorney Lake, it brings together thousands of professionals for a day of athletic challenge, networking, and charity fundraising.

The 2025 edition—its 18th year—features a sprint triathlon, duathlon, 2.2K open water swim, and even a fancy-dress competition for a bit of flair. It’s open to all levels, from seasoned triathletes to complete beginners, as long as you’re part of the property sector

Beyond the competition, it’s a major fundraiser—this year supporting Age UK—and a brilliant way to connect with colleagues and peers in a fun, energetic setting