How far is Sidney, MT from Missoula, MT?
The driving distance from Sidney, MT to Missoula, MT is about 542.6 miles (873.3 km), with a travel time of about 09h 02m by car.
- The straight-line flight distance is about 464.4 miles (747.3 km).
- For a round trip, plan for roughly 18h 04m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 09h 02m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Stillwater County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Chance Light Rain then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Sidney and Missoula.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sidney and Missoula.
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1
Start on North Central Avenue
2.5 mi · 3 min · North Central Avenue
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2
Enter the roundabout and take exit 2 toward the route
41 m · 2 sec
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3
Exit the roundabout
48.9 mi · 56 min
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4
Take the exit right
1385 ft · 34 sec
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5
Merge slight left
212.8 mi · 3 hr 31 min
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6
Merge slight left
2.8 mi · 3 min
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7
Continue straight
112.8 mi · 1 hr 52 min
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8
Continue straight
7 mi · 7 min
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9
Continue straight
113.4 mi · 1 hr 54 min
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10
Keep slight left to continue on I 90 West: Missoula
112.5 mi · 1 hr 47 min
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11
Take the exit slight right toward US 12 West, I 90 Business
1037 ft · 26 sec
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12
Enter the roundabout and take exit 3 toward Van Buren Street
63 m · 3 sec · Van Buren Street
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13
Exit the roundabout onto Van Buren Street
65 m · 4 sec · Van Buren Street
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14
Enter the roundabout and take exit 1 toward Van Buren Street
28 m · 1 sec · Van Buren Street
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15
Exit the roundabout onto Van Buren Street
583 ft · 11 sec · Van Buren Street
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16
Turn right onto East Broadway Street
3078 ft · 55 sec · East Broadway Street
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17
Turn right onto North Higgins Avenue
6 m · 1 sec · North Higgins Avenue
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18
Arrive at your destination
0 m · 1 sec · North Higgins Avenue
Car Route Details
A richer read on the saved driving route between Sidney and Missoula.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
North Central Avenue
Merge slight left
213 mi · 03h 31m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Partly Sunny leaving Sidney and Chance Light Rain then Showers And Thunderstorms near Missoula.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sidney to Missoula?
The road trip is about 542.6 miles (873.3 km) and usually takes 09h 02m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Columbus is a useful midpoint, sitting about 306.4 miles from Sidney and 236.2 miles from Missoula.
How much longer is the road route than the straight-line distance?
The direct path is about 464.4 miles (747.3 km), while the road route adds roughly 78.2 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 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $74.55 one way or $149.10 round trip. Estimated CO2 is about 170.2 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Sidney and Chance Light Rain then Showers And Thunderstorms near Missoula.
Stop Ideas Near Columbus
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 Columbus.
Billings, MT
Livingston, MT
Flight Path Map
This map shows the direct air route between Sidney and Missoula. Straight-line distance: 464.36 mi (747.32 km).
#1 Sidney
City in Montana, United States
| Population | 6,297 |
| Coordinates | 47.7166800, -104.1563300 |
| Altitude | 594 |
| Country | United States |
#2 Missoula
The most populous city in Missoula County, Montana.
| Population | 76,848 |
| Coordinates | 46.8721500, -113.9940000 |
| Altitude | 978 |
| Country | United States |
End: North Higgins Avenue (-113.994022, 46.872156)
Estimated Travel Time
Distance: 873 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 18h 04m |
| 40 mph (64.37 km/h) | 13h 34m |
| 50 mph (80.47 km/h) | 10h 51m |
| 60 mph (96.56 km/h) | 09h 02m |
| 70 mph (112.65 km/h) | 07h 45m |
| 80 mph (129 km/h) | 06h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $74.55 | $149.10 |
| Mid-grade | $4.23 | $81.02 | $162.05 |
| Premium | $4.55 | $87.11 | $174.23 |
| Diesel | $5.41 | $103.64 | $207.28 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.