TMC Earth Day 5K

The TMC Earth Day 5K at Biosphere 2 is a vibrant running event scheduled for April 19, 2025, in Oracle, Arizona. Participants can choose between a 5K run/walk and a children's 5K, all set against the stunning backdrop of the Biosphere 2 facility. The course features a mix of pavement and dirt paths, offering scenic views of the Catalina Mountains.

Registrants receive a souvenir race shirt and free entry to the Biosphere 2 for an informative tour. The event also includes live music, food trucks, and activities for children, all while raising funds for ocean reef research. Visit the organization's website for the most recent information.