Big Half Marathon 2026

A vibrant, inclusive half marathon that celebrates the diversity of London. Feel the energy as you run through the heart of four boroughs - Tower Hamlets, Southwark, Lewisham, and Greenwich - each bursting with culture, spirit, and support. Whether you're taking on the full half marathon, teaming up for the New Balance Big Relay, or joining the fun at the Big Mile, this is your moment to be part of something unforgettable. The Big Half starts at Tower Bridge and finishes by the famous Cutty Sark in Greenwich.