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TMC Earth Day 5K at Biosphere 2

Sat April 19, 2025 Oracle, AZ 85623 US Directions

Randy's prep day, two weeks before the race

Had a great visit with the folks at the Biosphere 2 as preparation for the April 20th TMC Earth Day.  Here are some of the photos from measuring the course and visiting Arizona Zipline Adventures, the zipline/restaurant offering participants an April discount.

2024 Updated Event Schedule for Thursday, April 18, Friday, April 19, and Race Day Saturday, April 20 Discounted visitor pricing + other visitor details Participant Discounts to Arizona Zipline Adventures and El Conquistador Hilton Hotel Donate Find a Participant Land History and Acknowledgement Randy's prep day, two weeks before the race
2024 5k Route, with course map and, staging area map 2024 Awards Refund Policy and Public Health Sublimated souvenir shirt Links to the history of Biosphere 2 Photos Sign Up
Driving Directions, Driving Maps, and Parking Event Info Volunteer Children's Running: 2 options Partners Run Tucson Calendar of Events Race Insurance

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