TMC Earth Day 5K at Biosphere 2

TMC Earth Day 5K at Biosphere 2

Date: April 18, 2026

Location: 32540 S. Biosphere Road, Oracle, AZ

More information: Race Website

Event Overview

• Celebrate Earth Day: Join us at Biosphere 2 for a 5k run and walk on the beautiful grounds.
• Course Details: A scenic 3.1-mile course nestled at the base of the Catalina Mountains.
• Post-Race Fun: Relax with music and food after the run.
• Perfect for Everyone: Suitable for both seasoned athletes and those looking for a fun exercise experience.

Pricing

• Entry Fee: $40 for the 5k includes race entry, souvenir shirt, and free entry to Biosphere 2.
• Children's Pricing: $10 for children 14-and-under includes the 5k race and entry, but no souvenir shirt.

Biosphere 2 Tours

• Living Laboratory: Explore diverse ecosystems and cutting-edge research facilities.
• Free Entry: All registrants receive free entry to the informative tour.
• Self-Guided Visits: Non-runners can purchase admission at a discounted rate of $10 before 8:30 am: kids under 12 are free.

Event Highlights

• Souvenir Shirt: The first 750 registrants will receive a souvenir shirt.
• Timed Race: Participants will receive a finisher's video.
• Awards: Age group and overall awards distribution, courtesy of The Running Shop.
• Post-Race Activities: Food trucks with delicious options and fun for kids.

Schedule

• Thursday, April 16: Packet pickup and registration at The Running Shop from 4:00-6:00 pm.
• Saturday, April 18: Race day registration from 7:15-8:15 am at Biosphere 2.
• 8:30 AM: Start time for the TMC Earth Day 5k Run/Walk.
• 10:00 AM: Awards ceremony and event wrap-up.

Additional Information

• Kids Activities: Bring the kids! Special pricing for children and activities available.
• Terrain: Mostly pavement with some hilly sections and a brief dirt path.
• Weather: Expect temperatures in the 50's to 70's.
• Assistance: Differently abled individuals are welcome, but be mindful of terrain challenges.

Contact & Support

• Training Advice: Contact RRCA-certified running coach Tia Accetta at tia@runtucson.net.
• Event Queries: Reach out to Race Director Randy Accetta at randy@runtucson.net.
• Do Good: The event supports the Ocean Reef research project at Biosphere 2.
• Pets: Sorry, pets are not allowed at the event.