Stopping points from Lambert-St. Louis International Airport to Seattle-Tacoma International Airport:

• Start from Lambert-St. Louis International Airport
• 5.5 hours to Des Moines, Iowa after driving about 340 miles / 540 km
• 4 hours to Sioux Falls, South Dakota after driving about 280 miles / 460 km
• 5 hours to Rapid City, South Dakota after driving about 350 miles / 560 km
• 5 hours to Billings, Montana after driving about 320 miles / 510 km
• 5 hours to Missoula, Montana after driving about 350 miles / 560 km
• 4.5 hours to Moses Lake, Washington after driving about 300 miles / 480 km
• 3 hours to Seattle-Tacoma International Airport after driving about 180 miles / 290 km

Your total trip with all stops is around 2,120 miles / 3410 km, taking roughly 32.5 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 STL and SEA.

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Stopping points from STL to SEA

Start from Lambert-St. Louis International Airport.

Des Moines, Iowa is stopping point #1 after driving about 340 miles (540 km) or 5.5 hours.

Sioux Falls, South Dakota is stopping point #2 after driving about 280 miles (460 km) or 4 hours. Your total trip so far is about 620 miles or 1000 km over roughly 10 hours of driving.

Rapid City, South Dakota is stopping point #3 after driving about 350 miles (560 km) or 5 hours. Your total trip so far is about 970 miles or 1560 km over roughly 14.5 hours of driving.

Billings, Montana is stopping point #4 after driving about 320 miles (510 km) or 5 hours. Your total trip so far is about 1,290 miles or 2070 km over roughly 20 hours of driving.

Missoula, Montana is stopping point #5 after driving about 350 miles (560 km) or 5 hours. Your total trip so far is about 1,630 miles or 2630 km over roughly 25 hours of driving.

Moses Lake, Washington is stopping point #6 after driving about 300 miles (480 km) or 4.5 hours. Your total trip so far is about 1,930 miles or 3110 km over roughly 29.5 hours of driving.

Finally, Seattle-Tacoma International Airport is your destination after driving about 180 miles (290 km) or 3 hours. Your total trip with all stops is around 2,120 miles or 3410 km, taking roughly 32.5 hours for the whole trip.

Stopping point calculator

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.