Cambridge Community 5k
5K Option (3.1 Miles)
The 5K option is perfect for runners and walkers of all levels.
Participants may begin near Watertown Square (suggested start location) and follow the Charles River path toward Cambridge before looping back. You may also complete your 5K on any safe route in Cambridge, Watertown, or nearby towns.
Many participants choose:
Charles River Greenway
Fresh Pond Reservation
Residential neighborhoods in East Watertown
Mount Auburn Street corridor
West Cambridge side streets
Complete your 5K anytime during the event window and submit your results online.
This option is great for families, first-time runners, and anyone looking for a steady community challenge.
The 5K option is perfect for runners and walkers of all levels.
Participants may begin near Watertown Square (suggested start location) and follow the Charles River path toward Cambridge before looping back. You may also complete your 5K on any safe route in Cambridge, Watertown, or nearby towns.
Many participants choose:
Charles River Greenway
Fresh Pond Reservation
Residential neighborhoods in East Watertown
Mount Auburn Street corridor
West Cambridge side streets
Complete your 5K anytime during the event window and submit your results online.
This option is great for families, first-time runners, and anyone looking for a steady community challenge.
- Event Dates:
- Wednesday January 21, 2026 - Saturday February 28, 2026
- Start Time:
- 10:00am EST
- End Time:
- 10:00am EST
- Registration:
- Online Registration is Closed
Online Registration has Ended.
Cambridge Community 10k
10K Option (6.2 Miles)
The 10K option is designed for participants looking for a longer route and a deeper connection between the two towns.
A suggested 10K route begins near Watertown Square, follows the Charles River path into Cambridge, loops around Fresh Pond, and continues along connecting paths before returning.
Participants may also design their own 10K route anywhere in Cambridge, Watertown, Belmont, or surrounding Middlesex County communities.
The 10K is ideal for experienced runners or those training for longer races.
The 10K option is designed for participants looking for a longer route and a deeper connection between the two towns.
A suggested 10K route begins near Watertown Square, follows the Charles River path into Cambridge, loops around Fresh Pond, and continues along connecting paths before returning.
Participants may also design their own 10K route anywhere in Cambridge, Watertown, Belmont, or surrounding Middlesex County communities.
The 10K is ideal for experienced runners or those training for longer races.
- Event Dates:
- Wednesday January 21, 2026 - Tuesday February 17, 2026
- Start Time:
- 10:00am EST
- End Time:
- 10:00am EST
- Registration:
- Online Registration is Closed
Online Registration has Ended.
This is a service fee for processing your registration. This may be slightly higher or lower per registrant than the amount shown here.
