RunRace USA › Massachusetts › Cambridge Half Marathon + 5K
Cambridge Half Marathon + 5K
Cambridge, Massachusetts · Saturday, October 31, 2026 · Half Marathon, 5K
Official race page & registration ↗Cambridge Half Marathon + 5K takes place on Saturday, October 31, 2026 in Cambridge, Massachusetts. The race offers 2 distances: Half Marathon, 5K.
It is one of 146 races on the Massachusetts calendar that October. At $45, entry sits above the $39 median for a Massachusetts half marathon.
- Date
- Saturday, October 31, 2026
- Location
- Cambridge, Massachusetts
- Distances
- Half Marathon, 5K
- Entry fee
- from $45
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Cambridge: check in Oct 30, out Nov 1.
Common questions
When is Cambridge Half Marathon + 5K?
Cambridge Half Marathon + 5K is scheduled for Saturday, October 31, 2026.
Where is Cambridge Half Marathon + 5K held?
Cambridge Half Marathon + 5K is held in Cambridge, Massachusetts.
What distances does Cambridge Half Marathon + 5K offer?
The listed distances are Half Marathon, 5K.
How much does Cambridge Half Marathon + 5K cost?
Entry is listed from $45. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Cambridge Half Marathon + 5K?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
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See every race on the Massachusetts calendar, Massachusetts Half Marathons, Massachusetts 5Ks, or use the Race Finder for maps and filters.