Detroit to TorontoAbout 390 km. I-75 or I-94 to the Ambassador Bridge, then Highway 401 east. The shortest approach to the bridge, so pickup and border timing are the easiest to line up.
Warren to TorontoAbout 380 km. I-696 or I-94 to I-75 and the Ambassador Bridge. Pickups from Warren usually clear the Detroit core early, which helps a morning crossing.
Sterling Heights to TorontoAbout 370 km. M-53 and I-696 to I-94, then I-75 to the Ambassador Bridge. The shortest of the five on paper, though the bridge approach sets the real schedule.
Ann Arbor to TorontoAbout 440 km. I-94 east to Detroit, then I-75 to the Ambassador Bridge and Highway 401. The longest of the five, so we plan the pickup around the crossing window.
Dearborn to TorontoAbout 390 km. I-94 or I-75 to the Ambassador Bridge, a short drive away. Crossing time is rarely the constraint here; truck access on residential streets is.