Registration for athletes of all ages and abilities is currently open at www.bostontri.com. The only triathlon held in the city of Boston, the Columbia Threadneedle Investments Boston Triathlon will take place at Massachusetts Department of Conservation and Recreation’s (DCR) Carson Beach in South Boston. The race will draw more than 2,000 athletes from Boston, 42 states and 15 countries, plus thousands of spectators. The event features both an Olympic distance competition and a Sprint distance race and includes a swim at DCR Carson Beach, a bike ride on DCR William Day Boulevard, and a run in Moakley Park. Participants can compete individually or as part of a team or relay, and the races will be followed by a celebratory after-party. Additionally, the event features the Boston Corporate Cup competition and an all-ages Kid’s Day. The race is produced by ethos, a mass participation event organization created to bring athletes together through challenging and unique sporting events. On Saturday, July 21, kids of all ages are expected at DCR Carson Beach for the annual Kids Day at the Boston Triathlon. Designed to inspire a future generation and provide a positive pathway with sports, Kids Day will feature the USAT Kids Splash-and-Dash event for athletes ages 7-15 and the Kids Fun Run for all athletes under the age of 7. Youth groups from across the city have already signed on to participate in the events on July 21, including the South Boston Leadership Initiative and Youth Enrichment Services (YES), a nonprofit organization based in Boston that provides Boston’s youth with year-round outdoor enrichment and leadership programs. The triathlon itself takes place on Sunday, July 22nd starting at 6:20 AM.