How far away is Ada from Tulsa?

Approx 120 miles

This is the route:

1. Take I-44 TURNPIKE - WEST (towards Oklahoma City), from Tulsa, to U.S. 377 off EXIT 179 in STROUD; turn right past the tollbooth onto U.S. 377 SOUTH.
2. Take U.S. 377 SOUTH to Ada.