Your total trip with all stops is around 1,430 miles / 2300 km, taking roughly 22.5 hours for the whole trip. If you want to see every small town along the way, you can get a full list of cities between SEA and PHX.
Start from Seattle-Tacoma International Airport.
Boise, Idaho is stopping point #1 after driving about 510 miles (820 km) or 8 hours.
Las Vegas, Nevada is stopping point #2 after driving about 620 miles (1000 km) or 9.5 hours. Your total trip so far is about 1,130 miles or 1820 km over roughly 17.5 hours of driving.
Finally, Phoenix Sky Harbor International Airport is your destination after driving about 300 miles (480 km) or 5 hours. Your total trip with all stops is around 1,430 miles or 2300 km, taking roughly 22.5 hours for the whole trip.
Travelmath helps you figure out where to stop when planning a long road trip from one location to another. The best stopping point for an overnight hotel stay or a break from driving often depends on how far or how long you want to drive before pausing to rest. You can find the closest city to your stopping point to look for hotels, or explore other cities and towns along the route. Use this as a road trip planner when you're driving cross-country or mapping a route with multiple stops.