Cal Tri DC

2026 Cal Tri DC

2026 Cal Tri DC takes place on June 14 at General Smallwood State Park in Marbury, Maryland, approximately 30 miles south of Washington, DC. The event is organized by Cal Tri Events and is held at the park located at 2750 Sweden Point Road.

The program includes 18 event options across Olympic, Sprint, and Youth Sprint formats. Triathlon events use a swim plus bike plus run format. Typically the swim and run distances are standard while the bike distance can vary by race. Average water temperature is 69 F, and wetsuits are legal. Average air temperatures are listed as 59 F to 81 F.

Distances and formats include:

• Olympic distance events: Triathlon, RunBikeRun, SwimBike, SwimRun, 1640 yard swim, 10K run
• Sprint distance events: Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard swim, 5K run
• Youth Sprint events: Triathlon, RunBikeRun, SwimBike, SwimRun, 400 yard swim, 5K run

Nearby visitor options in Washington, DC, include the Smithsonian National Museum of Natural History, the National Museum of African American History and Culture, and the US Capitol. The closest major airport referenced is Ronald Reagan Washington National Airport. Visit the organization's website for the most recent information.

Events nearby