TMC Earth Day 5k Run/Walk
- Start Time:
- 8:30am MST
- End Time:
- 11:00am MST
- Price:
- $40.00 Race Fee + $3.40 SignUp Fee
- Registration:
- Registration ends April 18, 2026 at 11:59pm MST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 1, 2026, 12:00am MST | April 18, 2026, 11:59pm MST | $40.00 Race Fee + $3.40 SignUp Fee |
Children's 5k
$10 price for children 14-and-under: includes race number, timing, and entry to Biosphere 2, but no t-shirt.
Open to ages 1 - 14.
- Start Time:
- 8:30am MST
- End Time:
- 11:00am MST
- Registration Limit:
- 38 spots left.
- Price:
- $10.00 Race Fee + $1.60 SignUp Fee
- Registration:
- Registration ends April 18, 2026 at 8:59am MST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| April 20, 2025, 11:13am MST | April 18, 2026, 8:59am MST | $10.00 Race Fee + $1.60 SignUp Fee |
Run in 3 Fun Places 10% Discount
10% Discount Per Event
TMC Old Tucson Trail Run 8-Mile, 4 Mile, 1 Mile
Pick
TMC Earth Day 5K at Biosphere 2
Pick
Here’s what you get when you sign up for this race bundle:
TMC Old Tucson Trail Run 8-Mile, 4 Mile, 1 Mile
Tucson, AZ 85735 US
02/22/2026
Pick
1
of the following events:
- 4-Mile Trail Run — Feb 22, 2026 at 9:15am MST to 11:00am MST
- 1 Mile Walk/Fun Run — Feb 22, 2026 at 9:15am MST to 11:00am MST
- Kids Mile 14-and-under — Feb 22, 2026 at 9:15am MST to 10:30am MST
- 8-Mile Trail Run — Feb 22, 2026 at 7:30am MST to 9:30am MST
TMC Earth Day 5K at Biosphere 2
Oracle, AZ 85623 US
04/18/2026
Pick
1
of the following events:
- TMC Earth Day 5k Run/Walk — Apr 18, 2026 at 8:30am MST to 11:00am MST
- Children's 5k — Apr 18, 2026 at 8:30am MST to 11:00am MST
This is a service fee for processing your registration. This may be slightly higher or lower per registrant than the amount shown here.
