How far is Big Sky, MT from Miles City, MT?
The driving distance from Big Sky, MT to Miles City, MT is about 340.2 miles (547.5 km), with a travel time of about 05h 22m by car.
- The straight-line flight distance is about 277.1 miles (445.9 km).
- For a round trip, plan for roughly 10h 44m 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 22m.
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.
City in Yellowstone County, Montana, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Snow Showers
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Big Sky and Miles City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Big Sky and Miles City.
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1
Start on Access
714 ft · 33 sec · Access
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2
Turn right onto Lone Mountain Trail
7.1 mi · 11 min · Lone Mountain Trail
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3
At the end of the road, turn left onto Gallatin Road
33.9 mi · 41 min · Gallatin Road
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4
Turn right onto Huffine Lane
5.3 mi · 8 min · Huffine Lane
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5
Continue on West Main Street
1.2 km · 59 sec · West Main Street
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6
Turn right onto West Babcock Street
1.1 km · 2 min · West Babcock Street
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7
At the end of the road, turn right onto South 11th Avenue
11 m · 7 sec · South 11th Avenue
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8
Turn left onto West Babcock Street
1.1 mi · 3 min · West Babcock Street
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9
At the end of the road, turn left onto South Wallace Avenue
109 m · 14 sec · South Wallace Avenue
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10
Turn right onto East Main Street
1.4 km · 2 min · East Main Street
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11
Take the exit right
1723 ft · 43 sec
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12
Merge slight left
23.3 mi · 23 min
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13
Continue straight
6.9 mi · 6 min
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14
Continue straight
113 mi · 1 hr 53 min
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15
Continue straight
3.1 mi · 4 min
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16
Keep slight left to continue on I 94 East: Bismark
134.7 mi · 2 hr 20 min
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17
Take the exit slight right toward I 94 Business: Miles City, Jordan
3.6 mi · 6 min
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18
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Big Sky and Miles City.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 94 East
Keep slight left to continue on I 94 East: Bismark
135 mi · 02h 20m
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.
Mostly Sunny then Slight Chance Snow Showers leaving Big Sky and Mostly Sunny near Miles City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Big Sky to Miles City?
The road trip is about 340.2 miles (547.5 km) and usually takes 05h 22m 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?
Laurel is a useful midpoint, sitting about 167.1 miles from Big Sky and 173.1 miles from Miles City.
How much longer is the road route than the straight-line distance?
The direct path is about 277.1 miles (445.9 km), while the road route adds roughly 63.1 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 6:16 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.72 one way or $93.43 round trip. Estimated CO2 is about 106.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Snow Showers around Big Sky and Mostly Sunny near Miles City.
Stop Ideas Near Laurel
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 Laurel.
Billings, MT
Flight Path Map
This map shows the direct air route between Big Sky and Miles City. Straight-line distance: 277.08 mi (445.91 km).
#1 Big Sky
Census designated place
| Population | 2,308 |
| Coordinates | 45.2846500, -111.3682900 |
| Altitude | 2200 |
| Country | United States |
#2 Miles City
City in Custer County, Montana
| Population | 8,264 |
| Coordinates | 46.4083400, -105.8405600 |
| Altitude | 722 |
| Country | United States |
End: Main Street (-105.84056, 46.408351)
Estimated Travel Time
Distance: 548 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 20m |
| 40 mph (64.37 km/h) | 08h 30m |
| 50 mph (80.47 km/h) | 06h 48m |
| 60 mph (96.56 km/h) | 05h 40m |
| 70 mph (112.65 km/h) | 04h 51m |
| 80 mph (129 km/h) | 04h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $46.72 | $93.43 |
| Mid-grade | $4.23 | $50.77 | $101.54 |
| Premium | $4.55 | $54.59 | $109.18 |
| Diesel | $5.41 | $64.94 | $129.89 |
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 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.