Sat, Oct 31, 2026

Cambridge Half Marathon + 5K

Cambridge, MA

Registration openAnnual since at least 2019
Half Marathon5K

Entry is $45 now and rises to $50 after Oct 25, 2026, so registering before then saves $5.

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About the Cambridge Half Marathon + 5K

Both races start and finish at CambridgeSide, a mall on the edge of the Charles River. The half marathon follows Memorial Drive, a flat road course that passes MIT and the Harvard University Stadium, with the river alongside for much of it. The shorter race turns back along the same waterway, with the Boston skyline visible across the water.

Packet pickup runs on the evenings of the two days before race weekend, and again on the afternoon of the shorter race's day, all inside CambridgeSide on the upper level. Pickup must happen before race morning. Parking garages nearby are free on race day with a pass collected at pickup; the Lechmere Green Line stop is a short walk if you prefer to skip the car.

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Distances & Start Times

13.1 Miles11/1/2026 07:00$125
13.1 Miles11/1/2026 07:00$125
5K10/31/2026 10:00$45
5K10/31/2026 10:00$45
Cambridge Half Marathon + 5K Challenge10/31/2026 10:00$200
Cambridge Half Marathon + 5K Challenge Charity Runner10/31/2026 10:00$200

Going for a Time?

Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.

Plan Your Trip

Where to Stay

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