The Big Half
Race Day Weather
Cool and overcast, light winds
Runners will face temperatures starting at 60°F and cooling slightly to 57°F. Humidity will be high at 81%, which may feel uncomfortable. With light winds and a slight chance of moderate rain, maintaining hydration and pacing conservatively is advised to counteract the humidity.
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Race Info
The Big Half is a half marathon through central and southeast London, organized by London Marathon Events, the team behind the TCS London Marathon. First held in 2018, the race starts on The Highway near the north side of Tower Bridge, loops east through Limehouse toward Canary Wharf, then crosses Tower Bridge and runs through Bermondsey, Rotherhithe, and Deptford to finish beside the Cutty Sark in Greenwich. The half is the centerpiece of a community-focused race day that also includes the one-mile Big Mile fun run and the New Balance Big Relay team event.
