Cambridge Half Marathon + 5K
USATF CertifiedSaturday, 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.
Course Information
USATF Certified Course
MA17008BK · Expires 2027
Certified Course Name
Cambridge Half Marathon
Net Drop
0.00
m/km
Separation
2.1%
start to finish
This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.
View USATF Course Map (PDF)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.
Course Information
USATF Certified Course
MA17008BK · Expires 2027
Certified Course Name
Cambridge Half Marathon
Net Drop
0.00
m/km
Separation
2.1%
start to finish
This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.
View USATF Course Map (PDF)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