The Big Half
Race Day Weather
Mild temps, variable winds ahead
Runners will face temperatures rising from 58°F at the start to 62°F at the finish, with a moderate humidity of 74%. Wind will be a factor, with a tailwind for the first three miles, shifting to headwinds in miles 4-5 and 7, and crosswinds at other points. Runners should adjust their pacing strategy for the headwinds and consider hydration more frequently due to 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.
