RunRace USA › Massachusetts › St. Mary’s 5K
St. Mary’s 5K
Brookline, Massachusetts · Saturday, September 26, 2026 · 5K
Official race page & registration ↗St. Mary’s 5K takes place on Saturday, September 26, 2026 in Brookline, Massachusetts. The race is run over 5K. For anyone travelling in, Boston is about 4 miles away.
It is one of 158 races on the Massachusetts calendar that September. At $30, entry is about typical for a Massachusetts 5K, where the median is $30.
- Date
- Saturday, September 26, 2026
- Location
- Brookline, Massachusetts
- Distances
- 5K
- Entry fee
- from $30
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 Brookline: check in Sep 25, out Sep 27.
Common questions
When is St. Mary’s 5K?
St. Mary’s 5K is scheduled for Saturday, September 26, 2026.
Where is St. Mary’s 5K held?
St. Mary’s 5K is held in Brookline, Massachusetts. It is about 4 miles from Boston.
What distances does St. Mary’s 5K offer?
The listed distances are 5K.
How much does St. Mary’s 5K cost?
Entry is listed from $30. Check the official race page for the current price, which usually rises closer to race day.
How do I register for St. Mary’s 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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- Sep 262026 Medway Police Chase 5K & Kids Fun Run Obstacle CourseMedway, MA
- Sep 262026 Mission Hill Road RaceBoston, MA
See every race on the Massachusetts calendar, Massachusetts 5Ks, or use the Race Finder for maps and filters.