Driving
Keystone to St. Louis
Updated: 28 May 2026
The drive from Keystone to St. Louis is approximately 1,400 kilometers. You will head east on I-90 before turning south and east on I-70. This route takes you through the heart of the Midwest. Expect a travel time of about 14 hours. It is a long but straightforward drive.
Total Distance: 1,400 km driving, 1,200 km air distance.
Fastest Way
Driving is the fastest method, taking approximately 14 hours.
Cheapest Way
Driving your own vehicle is the most practical and cost-effective way.
Compare Keystone to St. Louis Routes
Driving
Direct
Duration
14 hours
Avg Price
$160-$200 in fuel
Operator
Personal Vehicle
Route
I-90 E to I-29 S, then I-70 E to St. Louis.
Stop in Kansas City for a break.
Travel Tips
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FuelGas stations are plentiful along the route.
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Road ConditionsCheck the DOT websites for construction updates.
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DiningSt. Louis is famous for its toasted ravioli and gooey butter cake.
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NavigationThe route is very simple, mostly following I-70 E.
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TimeThe entire route is in the Central Time Zone.
Safety Tips
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WildlifeWatch for deer on the highway, especially at dawn and dusk.
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SpeedAdhere to speed limits, especially in construction zones.
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WeatherMidwest weather can be unpredictable; check forecasts.
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EmergencyCarry a basic tool kit and spare tire in your car.
People Also Ask
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Is there a bus to St. Louis?Bus service is not practical for this route.
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How long is the drive?The drive takes about 14 hours.
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Are there tolls?No, this route is toll-free.
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Is it safe to drive in winter?Winter driving can be dangerous; check reports before leaving.
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What is the best way to get to St. Louis?Driving is the most reliable method.
Quick Info
- From Keystone, South Dakota, United States
- To St. Louis, Missouri, United States
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Modes
Best Time to Travel
May to September for mild weather and outdoor activities.
Things to Do in St. Louis
1
Gateway Arch
An iconic monument and national park. It offers incredible views of the city and the Mississippi River.
2
St. Louis Zoo
A world-class zoo with free admission. It is a must-see for families.
3
City Museum
A unique, interactive museum built from repurposed materials. It is fun for all ages.
4
Forest Park
A massive urban park that houses the zoo, art museum, and science center.
Tags
Keystone to St. Louis
driving to St. Louis
I-90 to I-70
South Dakota to Missouri
road trip guide
St. Louis travel
fastest way to St. Louis
traveling from Black Hills
