KIDS DAY at The Boston Tri

Boston’s only triathlon invites all kids to experience the excitement of a triathlon by combining elements like swimming and running during the 11th Anniversary of KIDS DAY at The Boston Tri on Saturday, August 16, 2025, at DCR Carson Beach from 12:30-5:30PM.

This year’s race is again FREE for all kids. Click below to register your child.

For kids between ages 7-15, there is a FREE Splash & Dash and for kids under 7, there is a FREE Fun Run! Bring your kids, come celebrate, get active, and make memories—don’t miss out on the fun this year!

KIDS DAY packet pickup begins at 12:30 PM with the races kicking off at 3:00PM!

• Splash and Dash Ages 7-10 is a 100 meter swim followed by a 1K run.
• Splash and Dash Ages 11-15 is a 200 meter swim followed by a 2K run.
• Fun Run Ages 6 & under is a 100 yard run.

Register Now!

DOWNLOAD KIDS ATHLETE GUIDE

CLICK HERE TO VIEW THE KIDS SPLASH & DASH COURSE MAP

Please park in the parking lot of the Corcoran Jennison Companies Parking lot at 150 Mt. Vernon St. Dorchester, MA. Please note the UMASS Bayside lots are not available to the race on Saturday, August 16th.