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TMC Earth Day 5K at Biosphere 2

April 20, 2024 @ 8:30 am - 11:00 am

$5 – $35

Looking for a way to celebrate Earth Day? Join Run Tucson at Biosphere 2 for a 5k run and walk, entirely on the grounds of the famed facility.

Whether you're a seasoned athlete or just looking for a fun way to get some exercise, you're sure to enjoy yourself at the world-famous Biosphere 2.

Clear your schedule and walk or run the hidden Biosphere 2 backroads, nestled at the base of the majestic Catalina Mountains, north of Tucson. The rolling 3.1 mile course is perfect for racing and walking, with gorgeous desert and mountain views and a start and finish on the beautiful Great Lawn.

After the 5k, you can relax, listen to live music, snag some food, and enjoy other fun activities, so make sure to stick around to socialize and have some fun. All registrants receive free entry to the Biosphere 2 informative tour of the renowned research facility, with an exclusive peek into the inner workings of the Biosphere 2, a wild world of wetlands, rainforests, grasslands, fog deserts, and the big blue ocean. It's like a backstage pass to nature's superstar habitats!

Limited to 500 Registrants -- what you get:

Special sublimated souvenir shirt

Timed 5k with finisher's video

Age group and overall awards courtesy of The Running Shop

Free entry to the world-famous Biosphere 2

Snacks and drinks

Food trucks with yummy post-race food for purchase

Children's activities

COX Conserves special festivities planned


April 20, 2024
8:30 am - 11:00 am
$5 – $35
Event Category:


Biosphere 2
32540 S Biosphere Rd
Oracle, AZ 85623 United States
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