Greenwich Half Marathon

Old Greenwich, CT, USA · September 27, 2026
partly-cloudy-day57°·61° high·Breezy·Dry
7
Register

Race Day Weather

partly-cloudy-day
57°at start
66° high
Breezy
Dry

Comfortable temps

Mild 57°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 66°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. High humidity (86%) will make it harder to cool down through sweat — increase fluid intake accordingly.

partly-cloudy-night8
partly-cloudy-night8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day7
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day5

Pace Calculator

Distance: 13.1mi
0:00:00
HH:MM:SS
Pace
Weather Adj.
Common Goals:

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.

FAQ

When is the 2026 Greenwich Half Marathon?

The 2026 Greenwich Half Marathon will be held on Sunday September 27, 2026.

What is the time limit for the Greenwich Half Marathon?

The time limit for the Greenwich Half Marathon is 3 hours.

What will the weather be like for the 2026 Greenwich Half Marathon?

The forecast calls for a high of 71°F and a low of 57°F with a 19% chance of rain.
Area Map

Course Map