For one weekend each August, Carson Beach fills with swimmers, cyclists, runners, and cheering family members as the Boston Triathlon returns to Southie on Saturday, August 22, and Sunday, August 23, with two days of activity along the waterfront.

Saturday belongs to the kids. Kids Day at the Boston Triathlon returns for its 12th year, but organizers want families to know that the day is about much more than racing. Working with host partner Meet Boston, the Boston Triathlon has built Kids Day into a free family festival designed to give children of all interests and abilities something to enjoy.

“Kids Day has become one of the most meaningful parts of the entire race weekend,” said Michael O’Neil, Boston Triathlon event director. “We certainly love introducing kids to racing, but we don’t want families to think this is only for little endurance athletes. It’s really about creating a fun day at Carson Beach where any kid can come out, try something new, be active, and feel like they are part of something special.”

A free family festival at Carson Beach

In addition to the youth races, Kids Day will feature interactive activities and experiences from organizations throughout Boston and New England.

A big part of the mission is keeping Kids Day accessible and free to every family. Amazon’s continued support makes it possible to keep race registration—and the full race-day experience—free for every child. Kids who race receive a race shirt, finisher medal, food, and ice cream, all at no cost to their families.

The day also would not be possible without the support of local partners such as the South Boston Community Development Foundation, Collegium Pharmaceutical and other community organizations that help bring Kids Day to life.

Families will be able to try a golf simulator from Boston Common Golf and take part in interactive activations from the New England Free Jacks, DICK’S House of Sport, View Boston, and the New England Revolution.

For O’Neil, the mix of activities—and the ability to offer the experience at no cost to families—is intentional.

“We want a child who has never thought about racing to have just as much fun as the kid who already loves to swim and run,” O’Neil said. “Maybe they come because they want to kick a soccer ball, try golf, meet an athlete, or just spend a great day at the beach with their family. Then maybe they see the races and decide they want to give one a try. That is exactly the kind of experience we want to create.”

O’Neil is particularly excited that the Boston Fleet will be part of this year’s event. Fleet player Amanda Boulier will be at Carson Beach cheering on the kids.

“I know at least one four-year-old hockey player who is going to be pretty excited,” O’Neil said. “My daughter plays hockey and loves the Fleet and the Bruins, so getting to meet Amanda and have a professional hockey player there supporting the kids will be pretty special. Those are the kinds of experiences that can really stick with a kid.”

More than a race

The Boston Triathlon’s youth programming is also about creating opportunities for children to become more comfortable and confident around the water.

“We have always felt a responsibility to help more young people become comfortable and confident around the water,” O’Neil said. “We are founding partners of Swim Safe Boston, which was born out of a conversation at the Boston Triathlon about how we could do more to promote year-round swim safety and access—especially for kids. Seeing that conversation grow into a broader effort across the city is something we are extremely proud of.”

The goal is to make Kids Day welcoming whether a child arrives ready to race, wants to try something new, or simply comes with family to enjoy the festival.

“We want children and parents to understand that Kids Day is not only for kids who already think of themselves as athletes,” O’Neil said. “It is for the child who loves to swim, the child who enjoys running around with friends, the kid who loves hockey or soccer, or the child who just wants to try something different on a Saturday. The goal is to make that first experience positive and welcoming.”

Deep Southie roots

Since 2009, the Boston Triathlon has called Southie home. What began as a relatively small sprint race has grown into one of the nation’s premier triathlon events, drawing athletes to Boston from across the country and around the world. But throughout that growth, Carson Beach and Southie have remained its home.

Kids Day has become an important part of that connection to the neighborhood.

“Southie is the heart and soul of the Boston Triathlon,” O’Neil said. “The race has grown tremendously, but what makes it special is that its home is right here at Carson Beach. Our commitment to the neighborhood goes well beyond race weekend. We are here throughout the year, working with local organizations, community leaders, and families and looking for ways we can make a positive impact.”

Over the years, the organization has worked with local athletic groups, charitable organizations, city agencies, and neighborhood leaders. That community involvement has included youth sports opportunities, philanthropic partnerships, and programs connected to swimming and water safety.

The nationally recognized adult Boston Triathlon will follow on Sunday, bringing athletes back to Carson Beach for the traditional race day. But Saturday is designed specifically around kids, families, and the community.

For kids who want to race

For children who do want to experience racing, Kids Day provides an easy and approachable introduction.

Kids Day will take place at DCR Carson Beach from 8:30 a.m. to 2 p.m., with packet pickup beginning at 8:30 a.m. and the races starting at 10 a.m. Registration is free for every child who wants to participate.

Children ages 7 to 15 can take part in the Splash & Dash, which combines a short swim at Carson Beach with a run along the waterfront. Younger children ages 6 and under can participate in a 100-yard Fun Run.

Every child who races receives a race shirt, a finisher medal, food, and ice cream as part of the free Kids Day experience.

The races are designed to introduce children to multisport competition in a manageable, encouraging setting. For many participants, it will be their first organized race. Others may already swim, run, or play on local athletic teams and are ready to try something new.

“You see children arrive feeling a little uncertain, and a short time later they cross the finish line with a huge smile and a medal around their neck,” O’Neil said. “It’s great to see the joy and sense of accomplishment they have after finishing.”

How to take part

Families interested in Kids Day do not need to arrive with a future triathlete in tow. Whether a child wants to race, try the golf simulator, meet professional athletes, take part in one of the interactive activations, or simply enjoy a day at Carson Beach, the Saturday festival is designed to be accessible and welcoming to everyone.

Families interested in registering a child for Kids Day or residents looking for Boston Triathlon weekend information can visit the Boston Triathlon website for registration details, schedules, and event updates.

Whether it is a five-year-old trying a first Fun Run, a young hockey fan meeting a professional athlete, or a family simply looking for a free day of fun at Carson Beach, Kids Day has grown into something larger than a youth race: a Southie summer tradition built around kids, activity, community, and giving every child a chance to be part of the experience.

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