Upcoming running race
TMC Earth Day 5K at Biosphere 2
Apr 17, 2027 at 8:30 AM MST · Oracle, AZ, 85623 · 5K
About this race
TMC Earth Day 5K at Biosphere 2
TMC Earth Day 5K at Biosphere 2 is scheduled for Apr 17, 2027 at 8:30 AM MST in Oracle, AZ. The listed distance is 5K, with a currently listed entry fee from $38.10. This listing was most recently checked against RunSignup data on July 23, 2026.
What to verify before registering
Use the official race page to confirm the start time, exact venue, entry fee, registration deadline, packet pickup, course surface, elevation, time limit, age rules, stroller or pet policy, parking, transfers, refunds, and any schedule changes. The organizer’s page is the final source for operational details.
Planning for a spring race in Oracle
April weather and course conditions can change quickly. Review the forecast and organizer updates close to race day, plan your clothing and hydration for the conditions, and allow extra arrival time for parking, restrooms, bib pickup, and the walk to the start area.
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