Driving
Twin Falls to Great Falls
Updated: 30 May 2026
The drive from Twin Falls to Great Falls is a 700-kilometer journey through the beautiful landscapes of Idaho and Montana. You will primarily follow I-84 East to I-15 North. The trip takes approximately 7.5 hours. This route passes through the scenic Rocky Mountains.
Total Distance: Driving distance 700 km, straight-line air distance 520 km.
Fastest Way
Driving via I-84 and I-15 is the fastest route, taking about 7.5 hours.
Cheapest Way
Driving your own vehicle is the most economical way to reach Great Falls.
Compare Twin Falls to Great Falls Routes
Driving
Direct
Duration
7.5 hours
Avg Price
$100-$130 in fuel
Operator
Personal Vehicle
Route
I-84 E to I-15 N.
Stop in Helena for a break; it is a historic town on the route.
Travel Tips
-
TrafficTraffic is generally light, but be aware of construction zones.
-
WeatherMountain weather can change quickly; bring layers.
-
FuelGas is readily available along I-15.
-
NavigationUse a GPS to navigate the mountain roads.
-
RestTake breaks at the many rest areas along I-15.
Safety Tips
-
WildlifeWatch for deer and elk crossing the road, especially at night.
-
TrafficBe patient in heavy traffic; avoid aggressive driving.
-
Emergency KitCarry a basic emergency kit in your car.
-
VisibilityUse headlights during the day to increase visibility.
People Also Ask
-
Is there a train to Great Falls?No, there is no passenger rail service to Great Falls.
-
How long is the drive?The drive takes about 7.5 hours.
-
Are there tolls?No, there are no toll roads on this route.
-
What is the best time to visit?Summer is best for outdoor activities.
-
Is Great Falls safe?Great Falls is a safe city with a friendly community.
Quick Info
- From Twin Falls, Idaho, United States
- To Great Falls, Montana, United States
-
Modes
Best Time to Travel
June to September for the best weather and road conditions.
Things to Do in Great Falls
1
Giant Springs State Park
Features one of the largest freshwater springs in the world.
2
C.M. Russell Museum
Features a large collection of art by Charles M. Russell.
3
Missouri River
Offers excellent opportunities for rafting, kayaking, and fishing.
4
Lewis and Clark Interpretive Center
Features exhibits on the Lewis and Clark expedition.
Tags
Twin Falls to Great Falls drive
I-15 route
Idaho to Great Falls Montana
road trip Twin Falls Great Falls
Great Falls travel guide
driving route Idaho to Montana
best way to Great Falls
scenic drive Idaho Montana
