Driving
St. George to Sioux Falls
Updated: 29 May 2026
The route from St. George to Sioux Falls is a major cross-country trek of 2,100 kilometers. You will follow I-15 North to I-90 East, crossing through Utah, Idaho, Montana, Wyoming, and South Dakota. This journey takes approximately 20 hours of driving time. It is recommended to split this trip into three days to ensure safety and enjoyment. You will experience the transition from desert to mountains to the Great Plains.
Total Distance: 2,100 km driving distance; 1,750 km straight-line air distance.
Fastest Way
Driving is the most reliable method; flying is not time-efficient due to connections.
Cheapest Way
Driving is the only practical way to complete this long-distance route.
Compare St. George to Sioux Falls Routes
Driving
Direct
Duration
20 hours
Avg Price
$350-$450 in fuel
Operator
N/A
Route
I-15 N to I-90 E across the entire northern US.
Plan overnight stops in Billings and Rapid City.
Travel Tips
-
PacingDo not attempt to drive this in one go; it is dangerous.
-
FuelKeep your tank above half in rural Wyoming and South Dakota.
-
WeatherCheck for high wind warnings on the plains.
-
LodgingBook hotels in advance for major stops like Billings.
-
SuppliesCarry a full emergency kit including extra water and blankets.
Safety Tips
-
DrowsinessStop every 3 hours to walk around and stay alert.
-
WildlifeBe extra cautious at night due to deer and elk.
-
SpeedingStay within the speed limit to avoid heavy fines in small towns.
-
CommunicationEnsure you have a car charger for your phone at all times.
People Also Ask
-
Is it a long drive?Yes, it is over 2,000 kilometers.
-
Can I fly?Flights are available but involve multiple connections.
-
What is the best route?I-15 to I-90 is the most direct path.
-
Is it safe?Yes, provided you take breaks and plan your route.
-
Are there tolls?No, this route is toll-free.
Quick Info
- From St. George, Utah, United States
- To Sioux Falls, South Dakota, United States
-
Modes
Best Time to Travel
Late spring or early autumn to avoid extreme weather conditions.
Things to Do in Sioux Falls
1
Falls Park
The namesake of Sioux Falls, these beautiful waterfalls are the city's centerpiece.
2
Washington Pavilion
A cultural center in Sioux Falls featuring a science center, art gallery, and theater.
3
Great Plains Zoo
A well-maintained zoo perfect for a family afternoon in Sioux Falls.
4
SculptureWalk
An outdoor exhibit of sculptures throughout downtown Sioux Falls that changes annually.
Tags
St. George to Sioux Falls
drive to South Dakota
I-90 cross country
Utah to Sioux Falls
road trip guide
driving distance St. George to Sioux Falls
best route to Sioux Falls
travel across US
