TMC Earth Day 5k Run/Walk
5k Run or Walk on the grounds of the Biosphere 2
- Start Time:
- 8:30am MST
- End Time:
- 11:00am MST
- Registration Limit:
- 643 spots left.
- Price:
- $35.00 Race Fee + $3.10 SignUp Fee
- Registration:
- Price increases to $40.00 after November 30, 2026 at 11:59pm MST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| May 1, 2026, 12:00am MST | November 30, 2026, 11:59pm MST | $35.00 Race Fee + $3.10 SignUp Fee |
| December 1, 2026, 12:00am MST | March 31, 2027, 11:59pm MST | $40.00 Race Fee + $3.40 SignUp Fee |
| April 1, 2027, 12:00am MST | April 17, 2027, 11:59am MST | $45.00 Race Fee + $3.70 SignUp Fee |
Children's Discount
To make family exercise more affordable, there is a $12 price for the first 70 children 12-and-under. The fee includes a race number, an official time, finisher's video, post-race snacks, and free entry to the Biosphere 2, but no t-shirt.
If you want your child to receive a race shirt, please enter them in the regular 5k event.
If you want your child to receive a race shirt, please enter them in the regular 5k event.
Open to ages 1 - 12.
- Start Time:
- 8:30am MST
- End Time:
- 11:00am MST
- Registration Limit:
- 98 spots left.
- Price:
- $12.00 Race Fee + $1.72 SignUp Fee Increases to $15 after the first 70 people register. (68 spots left)
- Registration:
- Registration ends April 17, 2027 at 8:59am MST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| April 19, 2026, 11:13am MST | April 17, 2027, 8:59am MST | $12.00 Race Fee + $1.72 SignUp Fee |
This is a service fee for processing your registration. This may be slightly higher or lower per registrant than the amount shown here.
