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
Course Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Course Map
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
Race Photos
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