TMC Earth Day 5K

The TMC Earth Day 5K at Biosphere 2 is a scenic running and walking event held in Oracle, Arizona, on the grounds of the renowned Biosphere 2 research facility. The 3.1-mile course features rolling terrain with mostly paved paths and a brief dirt section, offering beautiful desert and Catalina Mountains views. The event includes a timed 5K run/walk and a children's 5K, with age group and overall awards.

Participants enjoy free entry to Biosphere 2, where they can explore diverse ecosystems like wetlands and rainforests. Post-race festivities include music, food trucks, snacks, and children's activities, creating a family-friendly, festive atmosphere. Visit the organization's website for the most recent information.