Mission San Xavier del Bac

294-2624, off I-19 at exit 92. Free. 7 a.m.–5 p.m. Allow 2–3 hours.Begin your tour at Congress St. and Grande Ave., west of I-10. Grande Ave. becomes Mission Rd. as you travel south. The bike lane ends south of Drexel Rd. but remains a good paved road into the San Xavier Indian Reservation. Intermediate, one-hour ride.