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Cambridge Half Marathon + 5K logo

Cambridge Half Marathon + 5K

Sun, Nov 1, 2026, 7:00 AM EST

Location
Cambridge, MA
100 CambridgeSide Place, 02141
Type
RUN

Sign up and verify details on the organizer’s official page.

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Course feel, difficulty, and community fit are being added to this listing. Check back, and always confirm details on the official registration page.

Distances & registration

6 options

Registration for all distances is through the official signup link above.

  • 5K

    Sat, Oct 31, 10:00 AM EDT · From $49.83

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

  • 5K

    Sat, Oct 31, 10:00 AM EDT · From $49.83

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

  • 13.1 Miles

    Sun, Nov 1, 7:00 AM EST · From $109.50

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

+ 3 more options
  • 13.1 Miles

    Sun, Nov 1, 7:00 AM EST · From $109.50

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

  • Cambridge Half Marathon + 5K Challenge

    Sat, Oct 31, 10:00 AM EDT · From $190.88

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

  • Cambridge Half Marathon + 5K Challenge Charity Run…

    Sat, Oct 31, 10:00 AM EDT · From $190.88

    Opens Dec 30, 2025, 9:00 AM EST · Closes Dec 31, 2025, 5:00 AM EST

Vibe Check

Steady Effort

longer distance

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The course

From the organizer

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.

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