How far is Ennis, MT from Great Falls, MT?
The driving distance from Ennis, MT to Great Falls, MT is about 197.5 miles (317.8 km), with a travel time of about 03h 31m by car.
- The straight-line flight distance is about 150.1 miles (241.5 km).
- For a round trip, plan for roughly 07h 03m 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 03h 31m.
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 of the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Showers And Thunderstorms Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Ennis and Great Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ennis and Great Falls.
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1
Start on Main Street
42 m · 5 sec · Main Street
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2
Turn straight
137 m · 15 sec
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3
Continue straight
108.2 mi · 2 hr 3 min
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4
Take the exit slight right toward I 15 North: Great Falls
1958 ft · 48 sec
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5
Merge slight left onto First Special Service Force Memorial Highway
86 mi · 1 hr 23 min · First Special Service Force Memorial Highway
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6
Take the exit slight right toward I 15 Business, US 89 South, MT 200 East
2016 ft · 49 sec
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7
Continue on Country Club Boulevard
1.4 mi · 2 min · Country Club Boulevard
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8
Continue on 10th Avenue South
1.1 km · 58 sec · 10th Avenue South
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9
Turn left onto 4th Street South
2216 ft · 2 min · 4th Street South
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10
Arrive at your destination
0 m · 1 sec · 4th Street South
Car Route Details
A richer read on the saved driving route between Ennis and Great Falls.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Main Street
Continue straight
108 mi · 02h 03m
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.
Partly Sunny then Showers And Thunderstorms Likely leaving Ennis and Rain Showers Likely near Great Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ennis to Great Falls?
The road trip is about 197.5 miles (317.8 km) and usually takes 03h 31m 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?
East Helena is a useful midpoint, sitting about 98.7 miles from Ennis and 98.8 miles from Great Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 150.1 miles (241.5 km), while the road route adds roughly 47.4 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 9:56 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.13 one way or $54.27 round trip. Estimated CO2 is about 61.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Showers And Thunderstorms Likely around Ennis and Rain Showers Likely near Great Falls.
Stop Ideas Near East Helena
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 East Helena.
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Flight Path Map
This map shows the direct air route between Ennis and Great Falls. Straight-line distance: 150.04 mi (241.47 km).
#1 Ennis
Town in Madison County, Montana, United States
| Population | 1,042 |
| Coordinates | 45.3488200, -111.7297000 |
| Altitude | 1506 |
| 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: Great Falls (-111.30081, 47.50024)
Estimated Travel Time
Distance: 318 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 34m |
| 40 mph (64.37 km/h) | 04h 56m |
| 50 mph (80.47 km/h) | 03h 56m |
| 60 mph (96.56 km/h) | 03h 17m |
| 70 mph (112.65 km/h) | 02h 49m |
| 80 mph (129 km/h) | 02h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $27.13 | $54.27 |
| Mid-grade | $4.23 | $29.49 | $58.98 |
| Premium | $4.55 | $31.71 | $63.41 |
| Diesel | $5.41 | $37.72 | $75.44 |
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 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.