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2021 Mother's Day 5K & Half Marathon

Md5k logo

Join us along the Charles River for our 2nd annual Mother's Day 5K. This family-friendly 5K kicks off with a kid's race, then a winding 3.1 mile run/walk along the river path, followed by a 5-lap half marathon. 100% of the proceeds go to charity.

10:00 AM, Sun. May 16, 2021

Boston, MA 02135

Race / Category
Prizes / Awards
No surprise fees - what you see is what you pay, service fee included
10:00 AM
Entry includes a beautiful finisher’s medal.
9:00 AM
5K entry includes a beautiful finisher’s medal.
10:00 AM
5K entry includes a beautiful finisher’s medal.
10:00 AM
Entry includes a beautiful finisher’s medal.
10:00 AM
This is a 1,000' long fun-filled lap on the paved and gravel paths around the start/finish area.
8:00 AM
Volunteers get free entry into any 2018 Boston 5K Summer Series event.
Sorry; online registration for this event has closed. Click here to contact the organizer.
Organized by
Race logo 2014

RACE Cancer Foundation

J. Alain Ferry

From the Organizer

Course: The 3.11 miles race will be held on the scenic, flat, and winding paths along the Charles River at Boston's Herter Park.

BODYARMOR Hydration Stations: There will be two BODYARMOR stations, one at mile one and another at mile two. Each BODYARMOR station will have sports drink and water.

Dogs and strollers: You are welcome to run/walk with your dog or stroller, but please start at the back and pass cautiously and respectfully. The event is held on narrow park paths so there's not much room for passing.

We need volunteers!
We are seeking volunteers to help with several aspects of the event. 

Public Transportation: Harvard Square MBTA Station is a 1.1 miles away. The 70, 70a, and 86 buses will drop you .1 mile away at Western Ave & Everett St. Plan your trip here: Google Trip Planner

Parking: There’s a large parking area (lot #4) at 1101 Soldiers Field Road next to the start/finish area.