Cambridge Half Marathon + 5K
Race Date
Oct 31, 2026
Location
Cambridge, MA
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.
Logistics
Race Day
Saturday, October 31, 2026
Start Time
7:00 AM
Start Location
100 CambridgeSide Place, Cambridge, MA, 02141
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
2.1%
Also Offers
USATF Certified Course
MA17008BK · Expires 2027 · Cambridge Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Course Map
Historical Performance
Median Finish
2:05:56
9:37/mi
Winning Time
1:20:03
6:07/mi
Finishers (2025)
237
States Represented
15 / 50
Gender Split
Finish Time Distribution
FASTER 25%
1:49:59
MEDIAN
2:05:56
SLOWER 25%
2:20:35
Race Day Weather
5-year historical avgStart (Low)
43°
Afternoon (High)
58°
Ideal racing weather — cool and comfortable
0.1"
Precipitation
12 mph
Wind
73%
Humidity
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