TMC Earth Day 5k at the Biosphere 2, April 23, 2023
2023 Race Registration Now Open
2022: Click here for the Run Tucson Race Report
Click here for overall results from our friends at Roadrunner Race Timing.
Click here for age group results
Click here for the Damion Alexander photos
Click here for the video Damion put together.
Click here to see the KGUN Morning Blend pre-race interview about the event.
Run the Desert . . . then roam through a rain forest, view an ocean reef, and wander through savanna grass lands . . . all in one day!
Join us at the inaugural TMC Earth Day 5k, where you can walk or run the hidden backroads of the world-famous Biosphere 2, nestled at the base of the majestic Catalina Mountains, north of Tucson.
The rolling 3.1 mile course offers gorgeous desert and mountain views, with start and finish on the Biosphere 2 Lawn. Don’t miss this chance to visit the earth’s entire ecosystem under one roof while celebrating Earth Day.
Bring the Kids! Strollers are allowed at this child-friendly event, with a free Kid’s Dash & Kid’s Zone
Do Good! This inaugural event raises funds for the world-renowned Biosphere 2’s Ocean Reef Lab.
Terrain: mostly pavement, with a brief dirt section
Difficulty: hilly in sections
Runner Quote: Amazing course. Long upgrades. Very challenging. Great setting and wonderful cause. Thanks again.
Weather: 50’s – 70’s
Chair Athletes: Chair athletes may find this a doable but challenging course, with a couple of steep hills and the dirt road.
Pets Allowed: No, pets are not allowed on the Biosphere 2 grounds.
Want Training Advice? Contact RRCA-certified running coach Tia Accetta at email@example.com.