Wyoming Highway 370 is an unmarked state highway that runs east of Rock Springs, Wyoming from Interstate 80/U.S. Route 30 (exit 111) to the Rock Springs - Sweetwater County Airport.
Wyoming Highway 370 runs from an interchange with Interstate 80/U.S. Route 30 at Exit 111 that it shares with the south end of Sweetwater County Route 43 (Baxter Road), that travels north from there. Exit 111 is signed only as "Airport Road" from the Interstate, with one sign indicating "Baxter Road" along the interstate. There are no WYO 370 shields along the Interstate. WYO 370 travels east to the Rock Springs Regional Airport.
The airport sits on top of a large bluff, and Highway 370 travels in wide arcs up to the top of the hill. The location of the airport on a bluff makes this one of the most interesting airport approaches by airplane. Milepost 0.00 is at I-80/US 30, there is a Union Pacific Railroad Separation at Milepost 0.66. The airport is located at the end of the highway at Milepost 4.66.
The entire route is in Rock Springs, Sweetwater County.