Massachusetts · Half Marathon · 5K

TTP Cambridge Half Marathon + 5K

TTP Cambridge Half Marathon + 5K is a half marathon and 5K event held in Cambridge, Massachusetts. Its next confirmed date is Saturday, October 31, 2026. About 10,000 runners take part across all distances.

Race day
October 31, 2026
Location
Cambridge, MA
Field size
~10,000 runners

Race details

Date
Saturday, October 31, 2026
Distances
Half Marathon, 5K
Field size
About 10,000 runners
Course
Flat and fast; minimal elevation change along Memorial Drive beside the Charles River
Registration
runsignup.com
Official website
cambridgeside.com

Registration, course & weather

Start time
7:00 AM EDT
Course profile — Half Marathon
Out-and-back course; Road surface; USATF certified
Course profile — 5K
Out-and-back course; Road surface

About the TTP Cambridge Half Marathon + 5K

A fast, flat USATF-certified half marathon and 5K starting and finishing at CambridgeSide, running along Memorial Drive with views of the Charles River, MIT, and Harvard Stadium.

Rankings and notes

Rankings and awards
One of New England's largest half marathons; USATF-certified course

More half marathons in Massachusetts

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Guides from the RaceRove blog

TTP Cambridge Half Marathon + 5K: common questions

When is the TTP Cambridge Half Marathon + 5K?
The next confirmed date is Saturday, October 31, 2026.
Where is the TTP Cambridge Half Marathon + 5K held?
In Cambridge, Massachusetts.
What distances does the TTP Cambridge Half Marathon + 5K offer?
Half Marathon and 5K.
How many people run the TTP Cambridge Half Marathon + 5K?
About 10,000 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
How do I register for the TTP Cambridge Half Marathon + 5K?
Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
What time does the TTP Cambridge Half Marathon + 5K start?
7:00 AM EDT.