# Cambridge Half Marathon + 5K

- **When:** Fri, Oct 30, 2026 · 7:00 PM CDT
- **Where:** 100 CambridgeSide Place, Cambridge, MA, 02141
- **Event page:** https://runthis.run/event/rs-74589-cambridge-half-marathon-5k

## Registration

Register on the event's own site: https://runsignup.com/Race/MA/Cambridge/CambridgeHalfMarathon?aflt_token=58wBqomPr6bPwa1YDhuKo0IQvrNCjzTq

## Description

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.

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Source: [https://runthis.run/event/rs-74589-cambridge-half-marathon-5k](https://runthis.run/event/rs-74589-cambridge-half-marathon-5k) — data from Run This (runthis.run).