Maps & Directions

Getting to Biosphere 2

From central Tucson, go north to River Road and turn left (heading west).
Continue on River Road and turn right (north) on Oracle Road (Arizona Highway 77).
Continue north approx. 24 miles on Oracle Road/Highway 77, to Biosphere 2 Road at Mile Post 96.5, and turn right.

After leaving the airport, follow the signs to Interstate 10 East.
Take I-10 East, toward Tucson, to Exit 185 and exit the interstate.
Turn left onto Highway 387 and continue past Coolidge until Highway 387 intersects with Arizona Highway 79 near Florence.
Turn right on to Highway 79 and follow this until Oracle Junction where you turn left onto Arizona Highway 77.
Drive 6 miles to the Biosphere 2 turnoff, located at Mile Post 96.5. Turn right on Biosphere Road.