Grab your craziest costume, lace up your running shoes and get ready for some spooky fun, because the Boston Costume Dash is returning on Saturday, October 26th! With an all-new course on the Charles River Esplanade, an afternoon start time and awesome after party, the revamped 2019 event will be can’t-miss!

Not just a road race, it’s a complete Halloween experience! 

After hundreds of costumed runners dressed as superheroes, inflatable dinosaurs and other spirited costumes take on the beautiful 5k course in hilarious fashion, the fun is just beginning. Once you claim your commemorative finisher’s medal, celebrate with a costume contest, free sponsor swag, and an after party for 21+ runners!

This event is sponsored by the Massachusetts Department of Conservation and Recreation (DCR).

As you know, the United States has seen a continued surge in COVID-19 cases that unfortunately shows no signs of slowing. Although we had hoped to produce Costume Dash in October, we’ve deemed the risk to our staff, our volunteers, our runners, and the local community that hosts our event to be too great to conduct the event in 2020.  

If you have any questions or concerns, please reach out to [email protected].

On behalf of the Costume Dash team, we thank you for your understanding and support during these unprecedented times, and we look forward to getting out there and running with you in 2021.

Ready To Run?

Click the button below to reserve your spot for Boston’s spookiest road race!

Register Today!

What You Get

Your registration for the What Moves You 5k includes a lot of awesome stuff! Check it out:

Commemorative Race Tee

All runners get an awesome short-sleeve commemorative race shirt!


You’ll get treated to a buffet of healthy food following the race, including breakfast burritos, bananas, and granola bars!

Race Beer

As if all that wasn’t enough, runners 21+ also get a post-race party including refreshing Dos Equis beer!


Early Bird - $35

Through October 11, 2019

Regular - $45

Through October 24, 2019


Date: Saturday, October 26, 2019

Packet Pick-Up & Race Day Registration: 1:30 – 3:00 pm
Start Time: 3:00 pm

Location: Fiedler Field (Charles River Esplanade) Boston, MA 02114

A costume contest will be held post-race, which includes special prizes and swag for the best costumes as selected by crowd applause, so be sure to go all out! To be eligible to win in the costume contest, you must wear your costume during the race.


Please see below for instructions on how to get to Fiedler Field. Note that there is no public parking on the Esplanade and vehicles are not permitted in the park. Please follow the below directions on how to get to the park. Please use the address 84 Beacon Street as your destination if you are taking a rideshare.


  • Everyone is strongly encouraged to wear a costume. Costumes must be worn during the race to be eligible to win a prize in the costume contest.
  • Racers must be at least 10 years old.
  • NO REFUNDS under any circumstances.
  • All participants must sign a waiver of liability.
  • If there is severe weather that prevents the event from being held at all on Saturday, it will be moved to an alternative date.
  • No weapons are allowed as part of a costume.
  • No animals, including dogs, are permitted on the course.

Course Map


Still have questions?

Have any questions that aren't answered above? Simply email us at [email protected]!

Ready To Run?

Click the button below to reserve your spot for Boston’s spookiest road race!

Register Today!