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Boston’s only triathlon invites all kids to experience the excitement of a triathlon by combining swimming and running during the 12th Anniversary of KIDS DAY at The Boston Tri on Saturday, August 22, 2026, at DCR Carson Beach from 8:30 AM-2:00 PM.
This year’s race is again FREE for all kids. Click the button 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 8:30 AM with the races kicking off at 10:00 AM!
• Splash and Dash Ages 11-15 is a 200 meter swim followed by a 2K run.
• Splash and Dash Ages 7-10 is a 100 meter swim followed by a 1K run.
• Fun Run Ages 6 & under is a 100 yard run.
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 22nd.
