Greenwich Half Marathon
Race Day Weather
Comfortable temps, moderate wind
Mild 56°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 20mph may affect pacing on open sections of the course. High humidity (90%) will make it harder to cool down through sweat — increase fluid intake accordingly.
Pace Calculator
Get forecast alerts for Greenwich Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Greenwich Half Marathon is an inaugural race held at Greenwich Point Park (Tod's Point) in Old Greenwich, Connecticut, organized by the nonprofit running club Greenwich Road Runners. The certified two-loop course is flat, with only 40 feet of elevation gain, and runs along Long Island Sound through Greenwich Point Park and the Old Greenwich village business district. The race benefits Kids in Crisis, a local charity providing crisis intervention and counseling services.
