Click here for the email to pre-registered participants with final updated race details.

- T-shirts to the first 600 registered, with sizing and style given away on a first-come, first-served basis at packet pickup.
- If you ordered a souvenir medal, you can pick it up at packet pickup.
- Registrants in the Kids 5k do not receive a shirt.
- Dynamic bib numbering: it helps if you have your registration confirmation available, but we will look you up on a tablet and assign you a number.
- Please be kind to the volunteers and those working!
Packet Pickup and Registration
Thursday, April 17 at The Running Shop, 3055 North Campbell Avenue, Tucson
4:00 – 6:00 pm Packet pickup and in-person registration. Shopping available!
Friday, April 18 at The Running Shop, 3055 North Campbell Avenue, Tucson
4:00 – 6:00 pm Packet pickup and in-person registration. Shopping available!
RACE DAY
Saturday, April 19 at Biosphere 2, 32540 S Biosphere Rd, Oracle, AZ 85739
Please consider carpooling as parking is limited on site. Remember, it is about a 40 minute drive from mid-Tucson.
7:00 – 8:15 am Race day registration and packet pick up in the parking lot by the front entrance at the Biosphere 2. The front entrance is about a 5 minute walk to the start line.
8:00 and ongoing: Food trucks, with snacks and drinks available for purchase.
- Check out the Blarney Stone General Contracting truck, with home remodeling ideas. They’ll have snacks, goodies, and water, too.
8:30 am: Start time for TMC Earth Day 5k Run/Walk, with announcements and music by Starlight Deejays.
- Post-race snacks of cookies, chips and more courtesy of TMC.
- SkratchLabs will provide post-race sports drink.
9:45 am or so: Free Kids Dash and Easter Egg-Type Hunt on the Great Lawn
10:00 am or so: Awards, courtesy of the Running Shop.
10:15 or so: Event wrap-up, with ongoing Biosphere 2 activities
Ongoing: All registrants receive a free entry ticket to the Biosphere 2. All non-running guests can purchase Biosphere 2 admission for the discounted rate of $10 (before 8:30 am) and all children under 12 are free.
Post-Race: All remaining shirts will be brought to the Running Shop and available for remainder pickup between April 21 – May 15.