How far is Big Sky, MT from Billings, MT?
The driving distance from Big Sky, MT to Billings, MT is about 198.7 miles (319.8 km), with a travel time of about 03h 12m by car.
- The straight-line flight distance is about 143 miles (230.1 km).
- For a round trip, plan for roughly 06h 24m 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 12m.
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 and county seat of Sweet Grass County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain And Snow then Snow Showers Likely
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Big Sky and Billings.
Turn-by-Turn Driving Directions
Step-by-step road directions between Big Sky and Billings.
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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
105.3 mi · 1 hr 45 min
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15
Take the exit slight right toward I 90 Business: West Billings
1948 ft · 48 sec
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16
Keep slight left to continue on I 90 Business: City Center
1.7 mi · 3 min
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17
Keep slight left to continue on Montana Avenue
1.3 mi · 2 min · Montana Avenue
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18
Continue on Montana Avenue
1.4 km · 3 min · Montana Avenue
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19
Arrive at your destination
0 m · 1 sec · Montana Avenue
Car Route Details
A richer read on the saved driving route between Big Sky and Billings.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
East Main Street
Continue straight
105 mi · 01h 45m
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.
Chance Rain And Snow then Snow Showers Likely leaving Big Sky and Mostly Sunny then Chance Showers And Thunderstorms near Billings.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Big Sky to Billings?
The road trip is about 198.7 miles (319.8 km) and usually takes 03h 12m 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?
Big Timber is a useful midpoint, sitting about 94.8 miles from Big Sky and 103.9 miles from Billings.
How much longer is the road route than the straight-line distance?
The direct path is about 143 miles (230.1 km), while the road route adds roughly 55.7 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 10:36 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.29 one way or $54.58 round trip. Estimated CO2 is about 62.3 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain And Snow then Snow Showers Likely around Big Sky and Mostly Sunny then Chance Showers And Thunderstorms near Billings.
Stop Ideas Near Big Timber
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 Big Timber.
Livingston, MT
Bozeman, MT
Billings, MT
Flight Path Map
This map shows the direct air route between Big Sky and Billings. Straight-line distance: 142.99 mi (230.12 km).
#1 Big Sky
Census designated place
| Population | 2,308 |
| Coordinates | 45.2846500, -111.3682900 |
| Altitude | 2200 |
| Country | United States |
#2 Billings
The most populous city in Montana.
| Population | 117,445 |
| Coordinates | 45.7832900, -108.5006900 |
| Altitude | 952 |
| Country | United States |
End: Montana Avenue (-108.500696, 45.783296)
Estimated Travel Time
Distance: 320 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 37m |
| 40 mph (64.37 km/h) | 04h 58m |
| 50 mph (80.47 km/h) | 03h 58m |
| 60 mph (96.56 km/h) | 03h 18m |
| 70 mph (112.65 km/h) | 02h 50m |
| 80 mph (129 km/h) | 02h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $27.29 | $54.58 |
| Mid-grade | $4.23 | $29.66 | $59.32 |
| Premium | $4.55 | $31.89 | $63.78 |
| Diesel | $5.41 | $37.94 | $75.88 |
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.