When
Sep 06, 2026
Starts at 8:30am BST
Weather
Last Year's Race Weather
☁️ Cloudy · 13°C–22°C
· Wind 18 km/h
Registration
Open Now
Opened September 7, 2025, Until Full
Website
Official website →
Event Details
Join the city’s most vibrant celebration of community and movement at the Big Half. 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.
Event type
Half-Marathon
Distance
21.1 km
Surface
Road
Registration opens
September 7, 2025
, Until Full
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