Run the Thames Bridges - half marathon

Run a half marathon over the Thames bridges on a self-guided audio tour, triggered by your GPS.

Secret London Runs challenge you to run a half marathon over 17 of the Thames bridges in a unique self-guided audio tour that takes you from Tower Bridge to Putney.​

With 17 bridges in total, your GPS location will trigger directions, along with audio commentary that celebrates the history of the glorious River Thames, its bridges and the development of our capital along its banks.

As you cross over every bridge possible along the route, you'll enjoy some of the best views of London, discover their history and get a unique training run in the bag.

Sign up today and take on the challenge at any time until 30th April 2025 with an optional finisher medal upon completion.

The exact route of the tour will be revealed when you strap in and begin your audio tour. But over it's 21.1km duration you will see:

Tower Bridge, London Bridge, Millenium Bridge, Waterloo Bridge (+13 more Thames Bridges)
Panoramic views of London
Many of London's biggest attractions (the Tower of London, St Paul's Cathedral, Big Ben, Battersea Power Station, the London Peace Pagoda and loads more)

We've been leading running tours of London for 9 years and can't wait to show you some of the city's best bits along our famous river.