The drive from Phoenix, AZ to Seattle, WA covers approximately 1,250 miles (2,010 km) and takes 20–24 hours of pure driving time—typically 3 days with rest stops.
| Route | Miles | Time | Character |
|---|---|---|---|
| I-17 N → I-40 W → I-15 N → I-84 W → I-82 W → I-90 W (via Flagstaff, Las Vegas, Salt Lake City, Boise) | ~1,250 | ~20 hrs | Fastest; major highways, services plentiful |
| I-10 W → I-5 N (via LA, Central Valley) | ~1,350 | ~22 hrs | Scenic but heavy LA traffic risk |
| US-89 N → I-70 W → I-15 N... (scenic "Grand Circle" detour) | ~1,450+ | ~25+ hrs | Zion, Bryce, Grand Canyon—vacation route |
For a pure road trip, the I-15/I-84/I-90 corridor balances speed, scenery, and reliability.