How far is Lewistown, MT from Polson, MT?
The driving distance from Lewistown, MT to Polson, MT is about 340.9 miles (548.7 km), with a travel time of about 05h 51m by car.
- The straight-line flight distance is about 225.7 miles (363.3 km).
- For a round trip, plan for roughly 11h 43m 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 51m.
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 Cascade County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Lewistown and Polson.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lewistown and Polson.
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1
Start on 6th Avenue South
121 m · 23 sec · 6th Avenue South
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2
Turn left onto West Main Street
1.3 km · 2 min · West Main Street
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3
Continue on US Highway 87
1.5 mi · 2 min · US Highway 87
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4
At the end of the road, turn left onto US Highway 87
14.7 mi · 16 min · US Highway 87
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5
Continue straight
64.3 mi · 1 hr 10 min
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6
Turn slight right
1588 ft · 21 sec
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7
Enter the roundabout and take exit 2 toward the route
52 m · 2 sec
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8
Exit the roundabout
557 ft · 7 sec
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9
Continue straight
19.3 mi · 21 min
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10
Turn right onto 57th Street South
1.5 km · 1 min · 57th Street South
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11
Turn left onto 2nd Avenue North
4.3 mi · 8 min · 2nd Avenue North
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12
At the end of the road, turn left onto Park Drive North
73 m · 4 sec · Park Drive North
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13
Turn right onto 1st Avenue North
1070 ft · 24 sec · 1st Avenue North
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14
Continue on First Avenue North Bridge
1045 ft · 18 sec · First Avenue North Bridge
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15
Continue on Central Avenue West
1.4 mi · 2 min · Central Avenue West
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16
Take the exit right
1311 ft · 32 sec
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17
Merge slight left onto First Special Service Force Memorial Highway
9.4 mi · 9 min · First Special Service Force Memorial Highway
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18
Take the exit slight right
148.3 mi · 2 hr 48 min
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19
Keep slight right
13.8 mi · 16 min
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20
Take the exit slight right toward US 93 North, MT 200 West: Kalispell
1009 ft · 25 sec
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21
Keep slight right to continue on US 93 North, MT 200 West: Kalispell
60.4 mi · 1 hr 15 min
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22
Turn left onto Main Street
94 m · 6 sec · Main Street
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23
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Lewistown and Polson.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
First Special Service Force Memorial Highway
Take the exit slight right
148 mi · 02h 48m
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.
Snow leaving Lewistown and Chance Light Rain near Polson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lewistown to Polson?
The road trip is about 340.9 miles (548.7 km) and usually takes 05h 51m 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?
Cascade is a useful midpoint, sitting about 170 miles from Lewistown and 171 miles from Polson.
How much longer is the road route than the straight-line distance?
The direct path is about 225.7 miles (363.3 km), while the road route adds roughly 115.2 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 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 5:16 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.83 one way or $93.67 round trip. Estimated CO2 is about 106.9 kg one way.
What should you check before leaving?
Before you leave, expect Snow around Lewistown and Chance Light Rain near Polson.
Flight Path Map
This map shows the direct air route between Lewistown and Polson. Straight-line distance: 225.74 mi (363.3 km).
#1 Lewistown
City in Montana, United States
| Population | 5,905 |
| Coordinates | 47.0624700, -109.4282400 |
| Altitude | 1203 |
| Country | United States |
#2 Polson
City in Lake County, Montana, United States
| Population | 5,181 |
| Coordinates | 47.6935500, -114.1631700 |
| Altitude | 892 |
| Country | United States |
End: Main Street (-114.163409, 47.69355)
Estimated Travel Time
Distance: 549 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 21m |
| 40 mph (64.37 km/h) | 08h 31m |
| 50 mph (80.47 km/h) | 06h 49m |
| 60 mph (96.56 km/h) | 05h 40m |
| 70 mph (112.65 km/h) | 04h 52m |
| 80 mph (129 km/h) | 04h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $46.83 | $93.67 |
| Mid-grade | $4.23 | $50.90 | $101.80 |
| Premium | $4.55 | $54.72 | $109.45 |
| Diesel | $5.41 | $65.11 | $130.21 |
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.