What is the distance from Downey California to Surprise Arizona?

Answer 1

365 miles

This is the route:

1. Take the 605 NORTH (or the 710 NORTH if you're closer to it), from Downey, to I-10 EAST to SAN BERNARDINO off EXIT 22 (for both freeways).
2. Take I-10 EAST to LOOP 303 - NORTH off EXIT 124.
3. Take LOOP 303 - NORTH to Surprise.