Saturday, October 31 · 5K · Half Marathon · Cambridge, MA
Cambridge Half Marathon + 5K
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…
Start line: 100 CambridgeSide Place
Register →49 days to race day
7 weeks to race day — get a training plan
A week-by-week plan scaled to Saturday, October 31, built around the Boston run clubs on your training days — shareable by URL, no account needed.
Build my plan →Train for it with a crew
A 5K is twelve weeks of Saturdays away, even from the couch. Run clubs in Boston →
Frequently asked
- When is the Cambridge Half Marathon + 5K?
- The next Cambridge Half Marathon + 5K is Saturday, October 31 in Cambridge, MA.
- Where does the Cambridge Half Marathon + 5K start?
- The Cambridge Half Marathon + 5K starts at 100 CambridgeSide Place in Cambridge, MA.
- What distances does the Cambridge Half Marathon + 5K offer?
- The Cambridge Half Marathon + 5K offers Half Marathon, 5K, Cambridge Half Marathon + 5K Challenge and Cambridge Half Marathon + 5K Challenge Charity Runner.
- How do I register for the Cambridge Half Marathon + 5K?
- You can register for the Cambridge Half Marathon + 5K on RunSignup. Use the Register link above; RunVibe does not sell registrations directly.
Listed on RunSignup. Race details are the organiser’s — confirm the date and start time with them before you travel.