How far is Post Falls, ID from Montpelier, ID?
The driving distance from Post Falls, ID to Montpelier, ID is about 620 miles (997.8 km), with a travel time of about 10h 25m by car.
- The straight-line flight distance is about 463.7 miles (746.2 km).
- For a round trip, plan for roughly 20h 51m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
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 10h 25m.
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.
City in Lemhi County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Snow then Snow Showers
Driving Route Map
The map below follows the saved road route between Post Falls and Montpelier.
Turn-by-Turn Driving Directions
Step-by-step road directions between Post Falls and Montpelier.
-
1
Start on West 10th Avenue
872 ft · 40 sec · West 10th Avenue
-
2
Turn right onto North Spokane Street
2114 ft · 1 min · North Spokane Street
-
3
Turn left
2024 ft · 51 sec
-
4
Merge slight left
285.1 mi · 4 hr 47 min
-
5
Take the exit slight right toward I 15 South: Dillon, Idaho Falls
2694 ft · 1 min
-
6
Merge slight left
269.3 mi · 4 hr 14 min
-
7
Take the exit slight right toward I 15 Business, US 30 East: Mc Cammon, Soda Springs, Montpelier
1579 ft · 44 sec
-
8
Turn left onto East Merrill Road
31.6 mi · 38 min · East Merrill Road
-
9
Continue straight
32.3 mi · 42 min
-
10
Arrive at your destination
0 m · 1 sec · North 4th Street
Car Route Details
A richer read on the saved driving route between Post Falls and Montpelier.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
North Spokane Street
Merge slight left
285 mi · 04h 47m
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.
Chance Light Rain leaving Post Falls and Snow then Snow Showers near Montpelier.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Post Falls to Montpelier?
The road trip is about 620 miles (997.8 km) and usually takes 10h 25m 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?
Salmon is a useful midpoint, sitting about 309.7 miles from Post Falls and 310.3 miles from Montpelier.
How much longer is the road route than the straight-line distance?
The direct path is about 463.7 miles (746.2 km), while the road route adds roughly 156.3 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 PDT. 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 $85.18 one way or $170.36 round trip. Estimated CO2 is about 194.4 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Post Falls and Montpelier, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Chance Light Rain around Post Falls and Snow then Snow Showers near Montpelier.
Flight Path Map
This map shows the direct air route between Post Falls and Montpelier. Straight-line distance: 463.66 mi (746.19 km).
#1 Post Falls
City in Kootenai County, Idaho, United States
| Population | 36,250 |
| Coordinates | 47.7179600, -116.9515900 |
| Altitude | 665 |
| Country | United States |
#2 Montpelier
City in Bear Lake County, Idaho, United States
| Population | 2,538 |
| Coordinates | 42.3221500, -111.2977000 |
| Altitude | 1823 |
| Country | United States |
End: Montpelier (-111.2977, 42.32215)
Estimated Travel Time
Distance: 998 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 20h 39m |
| 40 mph (64.37 km/h) | 15h 30m |
| 50 mph (80.47 km/h) | 12h 23m |
| 60 mph (96.56 km/h) | 10h 19m |
| 70 mph (112.65 km/h) | 08h 51m |
| 80 mph (129 km/h) | 07h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $85.18 | $170.36 |
| Mid-grade | $4.23 | $92.57 | $185.15 |
| Premium | $4.55 | $99.53 | $199.06 |
| Diesel | $5.41 | $118.41 | $236.83 |
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 Idaho · 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.