Cambridge Half Marathon + 5K
About this race
The Cambridge 5K is the kickoff to race weekend! It's a 3.1-mile course that starts and finishes at CambridgeSide. It's a quick out and back along the Charles River that will have you in awe of the Boston skyline.
The Cambridge Half Marathon is a 13.1-mile USATF certified course that starts and finishes at CambridgeSide. It is a fast and flat course along Memorial Drive featuring views of the Charles River, MIT, John W. Weeks Footbridge, Harvard University Stadium, and more.
Join fellow runners on November 1, 2025 for the Cambridge Half Marathon + 5K. It's a fantastic 5K, Half-Marathon featuring a flat and fast course in Cambridge.
Pick your distance
Running
5K
Cambridge Half Marathon + 5K Challenge
Cambridge Half Marathon
Participants have three hours net time to complete the race.
Half Marathon Charity Runner
Weather Overview
These values reflect historical conditions on the race dates in Cambridge in 2025, from Open-Meteo archive data.
About Cambridge
Cambridge Half Marathon + 5K takes place in Cambridge, Massachusetts, United States. The local timezone is America/New_York.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.