Flatout London lands at the iconic Old Billingsgate Market from 25th–27th September 2026, bringing competitive fitness to the heart of the capital. Set against the backdrop of Tower Bridge and The Shard, this is your chance to take on 8 workout zones, 4km of running and an atmosphere unlike anything else. Whether you’re going solo, taking on Sidekicks, racing as a Relay team or entering the Next Gen category, Flatout is built to be challenging, inclusive and unforgettable.