2025 Race Weekend Schedule
Thursday, April 17
4:00 - 6:00 pm Packet pickup and in-person registration at The Running Shop, 3055 North Campbell, Tucson
T-shirts to the first 600 registered, sizing and style on a first-come, first-served basis.
Yes: If you ordered a souvenir medal or hat, you can pick it up at packet pickup.
Yes: You can pick up the number/shirt of other people
Yes: You can shop for cool goodies at The Running Shop.
Yes: It may be crowded, so please be nice to everyone
Yes: Be sure to take pins and pin your number on the front of your racing shirt.
Friday, April 18
4:00 - 6:00 pm Packet pickup and in-person registration at The Running Shop, 3055 North Campbell, Tucson
T-shirts to the first 600 registered, sizing and style on a first-come, first-served basis.
Yes: If you ordered a souvenir medal or hat, you can pick it up at packet pickup.
Yes: You can pick up the number/shirt of other people
Yes: You can shop for cool goodies at The Running Shop.
Yes: It may be crowded, so please be nice to everyone
Yes: Be sure to take pins and pin your number on the front of your racing shirt.
Saturday, April 19 at Biosphere 2, 32540 S Biosphere Rd, Oracle, AZ 85739
Please consider carpooling. Please park in the main parking lot at the Biosphere 2. Please follow the directions of the Biosphere 2 staff on hand.
7:15-8:15 am Race day registration and packet pick up in the parking lot by the front entrance at the Biosphere 2. Pick up your race shirt and colorful race bib number. If you ordered a souvenir medal or hat, you can pick it up at packet pickup.
8:30 am Start time for TMC Earth Day 5k Run/Walk
8:30 or so: Food trucks, with snacks and drinks available for purchase
9:45 am Free Kids Dash on the Great Lawn
10:00 am Awards, courtesy of the Running Shop. Remaining shirts available to late registrants, first-come, first-served.
10:15 Event wrap-up
Ongoing: Tour the Biosphere 2: All registrants can visit Biosphere2 on their own -- no need for a formal tour! 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: If you can't make the race weekend activities, please note that any remaining shirts will be brought to the Running Shop and available for pickup between April 21 - May 15. To get the size you want, pick up your shirt in advance.
