In 46 days · Sat, Oct 31, 2026
Don't let race day sneak up
One email during race week. That's it.
When
Saturday, October 31st, 2026
Where
100 CambridgeSide Place, Cambridge MA
Distances
Half · 5K
Typical weather
44–58°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2025
49–59°F
rain
2024
56–76°F
dry
2023
37–47°F
dry
2022
42–66°F
dry
2021
55–66°F
rain
2020
25–38°F
dry
2019
58–69°F
rain
2018
32–54°F
dry
2017
45–57°F
dry
2016
40–51°F
dry
Best months to race in Massachusetts →
About this race
Event Overview
- Date: 2026-10-31
- Location: 100 CambridgeSide Place, Cambridge, MA
- Event URL: Cambridge Half Marathon + 5K
Cambridge 5K
- Kickoff Event: The Cambridge 5K is the kickoff to race weekend!
- Distance: It's a 3.1-mile course that starts and finishes at CambridgeSide.
- Course Type: A quick out and back along the Charles River.
- Sightseeing: You will be in awe of the Boston skyline.
Cambridge Half Marathon
- Distance: The Cambridge Half Marathon is a 13.1-mile USATF certified course.
- Start/Finish: Starts and finishes at CambridgeSide.
- Course Features: It is a fast and flat course along Memorial Drive.
- Sightseeing: Featuring views of the Charles River, MIT, John W. Weeks Footbridge, Harvard University Stadium, and more.
Course map
Hotels for race weekend
Live prices near the start line, Oct 30 – Nov 1, 2026.
Train with a club
Run clubs near Cambridge to train with before race day.
See all run clubs near Cambridge →
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