How far is Libby, MT from Great Falls, MT?
The driving distance from Libby, MT to Great Falls, MT is about 316.9 miles (510 km), with a travel time of about 05h 24m by car.
- The straight-line flight distance is about 206.2 miles (331.9 km).
- For a round trip, plan for roughly 10h 49m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 05h 24m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Lake County, Florida, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Partly Sunny then Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Libby and Great Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Libby and Great Falls.
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1
Start on West 9th Street
2100 ft · 1 min · West 9th Street
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2
Continue on Minnesota Avenue
85.3 mi · 1 hr 35 min · Minnesota Avenue
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3
Enter the roundabout and take exit 2 toward West Idaho Street
31 m · 2 sec · West Idaho Street
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4
Exit the roundabout onto West Idaho Street
3.6 mi · 8 min · West Idaho Street
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5
Continue on US Route 2
1.2 mi · 2 min · US Route 2
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6
Turn straight onto State Highway 35
2.4 mi · 4 min · State Highway 35
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7
Continue straight
3.3 mi · 4 min
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8
Turn left
9.7 mi · 12 min
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9
At the end of the road, turn right onto US 2
1.7 mi · 2 min · US 2
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10
Continue on US Route 2
80.1 mi · 1 hr 31 min · US Route 2
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11
Enter the roundabout and take exit 1 toward the route
7 m · 1 sec
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12
Exit the roundabout
3.7 mi · 7 min
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13
Turn straight
68.3 mi · 1 hr 17 min
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14
Enter the roundabout and take exit 3 toward 1st Street Southwest
526 ft · 19 sec · 1st Street Southwest
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15
Exit the rotary onto 1st Street Southwest
33 m · 2 sec · 1st Street Southwest
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16
Turn straight onto Main Avenue South
1.1 km · 2 min · Main Avenue South
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17
Continue on United States Route 89
16.8 mi · 19 min · United States Route 89
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18
Continue on 1st Road Southeast
14.7 mi · 16 min · 1st Road Southeast
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19
At the end of the road, turn left
7.9 mi · 9 min
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20
Take the exit slight right toward I 15 South: Great Falls
1323 ft · 32 sec
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21
Merge slight left onto First Special Service Force Memorial Highway
9.5 mi · 9 min · First Special Service Force Memorial Highway
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22
Take the exit slight right toward I 15 Business
1262 ft · 31 sec
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23
Turn left onto Central Avenue West
1.5 mi · 2 min · Central Avenue West
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24
Continue on First Avenue North Bridge
1055 ft · 18 sec · First Avenue North Bridge
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25
Continue on 1st Avenue North
2717 ft · 52 sec · 1st Avenue North
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26
Turn right onto 5th Street North
2018 ft · 36 sec · 5th Street North
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27
Turn right onto 4th Avenue South
131 m · 24 sec · 4th Avenue South
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28
Turn left onto 4th Street South
70 m · 10 sec · 4th Street South
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29
Arrive at your destination
0 m · 1 sec · 4th Street South
Car Route Details
A richer read on the saved driving route between Libby and Great Falls.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Minnesota Avenue
Continue on Minnesota Avenue
85.3 mi · 01h 35m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Showers And Thunderstorms leaving Libby and Partly Sunny then Showers And Thunderstorms Likely near Great Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Libby to Great Falls?
The road trip is about 316.9 miles (510 km) and usually takes 05h 24m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Ferndale is a useful midpoint, sitting about 156 miles from Libby and 160.9 miles from Great Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 206.2 miles (331.9 km), while the road route adds roughly 110.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 6:10 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $43.52 one way or $87.05 round trip. Estimated CO2 is about 99.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Libby and Partly Sunny then Showers And Thunderstorms Likely near Great Falls.
Stop Ideas Near Ferndale
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ferndale.
Essex
Whitefish station
West Glacier
East Glacier Park
Flight Path Map
This map shows the direct air route between Libby and Great Falls. Straight-line distance: 206.25 mi (331.92 km).
#1 Libby
City in Montana, United States
| Population | 2,845 |
| Coordinates | 48.3882900, -115.5560000 |
| Altitude | 639 |
| Country | United States |
#2 Great Falls
Town in Cascade County, Montana, United States
| Population | 58,353 |
| Coordinates | 47.5002400, -111.3008100 |
| Altitude | 1015 |
| Country | United States |
End: 4th Street South (-111.300848, 47.50024)
Estimated Travel Time
Distance: 510 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 33m |
| 40 mph (64.37 km/h) | 07h 55m |
| 50 mph (80.47 km/h) | 06h 20m |
| 60 mph (96.56 km/h) | 05h 16m |
| 70 mph (112.65 km/h) | 04h 31m |
| 80 mph (129 km/h) | 03h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $43.52 | $87.05 |
| Mid-grade | $4.23 | $47.30 | $94.61 |
| Premium | $4.55 | $50.86 | $101.72 |
| Diesel | $5.41 | $60.51 | $121.01 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Montana · Apr 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.