Cambridge Half Marathon + 5K
Saturday, October 31, 2026
Cambridge, Massachusetts
The Experience
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.
Race Details
Race Day
Saturday, October 31, 2026 · 11/1/2026 07:00
Start Location
100 CambridgeSide Place, Cambridge, MA 02141
Course
Loop
Also Offers
Registration
Register online — $100
Race Website
Official race information
Historical Weather
☀
Avg High
58°F
☽
Avg Low
43°F
☂
Precip
0.12 in
🍃
Wind
11.9 mph
More races in Massachusetts
The Experience
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.
Race Details
Race Day
Saturday, October 31, 2026 · 11/1/2026 07:00
Start Location
100 CambridgeSide Place, Cambridge, MA 02141
Course
Loop
Also Offers
Registration
Register online — $100
Race Website
Official race information