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Start and finish in beautiful downtown Cambridge, Massachusetts.

Take a stroll or sprint down Mass Ave. The course is fast and flat so you can get back to the post race party sooner!

Festive attire is encouraged but not mandatory.

Registration Info:

We have a discount code for this event so be sure use RUNFELLOW10 for a 10% discount at checkout. Cambridge Classic 5Ks sell out.  Sign up early for the best prices.

Sign up for this fun 5K and Join Team RUNFELLOW for a VIP Tent!

VIP Teams:

Designed to reward our most loyal fans, the Team VIP Program is, hands down, the best way to experience any Classic 5K.  For a team to qualify for the items outlined below, it needs to have a minimum of 20 members registered for the race.

Register yourself and get 19 of your closest friends to join your team to receive the following:

  • Reserved tent and table in the post race area
  • Cold beer waiting for your team after you finish
  • Pouring station near your tent
  • Prime spot to enjoy our post-race live music

Largest Team Wins!

Prizes include a ridiculously oversized trophy.

You can create your team or add yourself to one during registration.  If you are not sure if your team has already been created, use the Teams/Groups tab to find out.

Post Race Party:

Post Race Party following the race with a great selection of beer.

Jingle Bell Run Boston

Be part of the longest-running, holiday-themed 5K race series anywhere – and fight with us to conquer arthritis!

The Arthritis Foundation’s original Jingle Bell Run is a fun way to get decked out and be festive, while racing to raise funds and awareness to cure America’s #1 cause of disability. Put on your favorite holiday costume. Tie jingle bells to your shoelaces. ’Tis the season to live it up and be jolly for a reason! Bring a team of friends, family and co-workers to run or walk, spread smiles and good cheer … and be a Champion of Yes! 100 percent of your registration fee and fundraising efforts go to this great cause.

RFRC Somerville Holiday Lights Run

What better way to check out all that glitters in Somerville than with a running tour!

Save the date and spread the word for our annual holiday lights run. Course map and bar TBD pending light locations (email with light stops you wish to add to the route). Don't forget your most festive attire, ugly sweaters and jingle bells welcome.

 >>> motivating fellow runners since 2013