Chelmsford Half Marathon
Race Day Weather
Cool start — fast day potential, warming through the race
A cool 48°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 60°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
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Race Info
The Chelmsford Half Marathon starts and finishes in Central Park, Chelmsford, on the same morning as the marathon. Runners share the marathon's opening route through West Park and past Writtle University toward Roxwell, then turn back for Central Park just past the six-mile mark, while the marathon continues on into the Essex countryside. The out-and-back course runs on quiet, undulating country lanes through the Writtle and Roxwell area.
