Spanning 312.1 miles through Idaho’s Mountain West, this journey from Salmon to Post Falls takes approximately 5 hours and 39 minutes of pure driving time. While it is technically possible to complete this trip in a single day, the turn-heavy nature of the route requires your full attention. Budget roughly $48 for fuel to make the trek comfortably. Navigating through Main Street, US 93, and Brooks Street, you will find this is a localized drive rather than a high-speed interstate sprint. Since the entire route stays within Idaho, you will remain in the Mountain West region for the duration of the trip, offering a consistent feel as you move toward your destination.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
156.1 miles from Salmon, ID
A natural place for your longest stop of the day
, about 3h 26m into the drive
.
Main Roads
Road
Distance
Duration
Jeannette Rankin Memorial Highway
169.2 mi
2h 58m
US 93
135.6 mi
2h 59m
South Reserve Street
5.4 mi
9m
Brooks Street
0.6 mi
1m
I 90 Business
0.3 mi
<1m
North Spokane Street
0.3 mi
1m
Main Street
0.2 mi
<1m
West 10th Avenue
0.2 mi
<1m
Longest stretch:
Jeannette Rankin Memorial Highway
— 169.2 mi, about 2h 58m
Turn-by-Turn Driving Directions
Step-by-step road directions between Salmon, ID and Post Falls, ID.
1
Start on South Saint Charles Street
206 ft·14 sec·South Saint Charles Street
2
Turn left onto US 93
0.2 mi·18 sec·Main Street
3
Turn slight right onto US 93
136 mi·2 hr 59 min·US 93
Toward US 93: MissoulaUse the straight lane.
4
Continue on Brooks Street
0.6 mi·1 min·Brooks Street
Use the straight / right lanes.
5
Turn left onto South Reserve Street
5.4 mi·9 min·South Reserve Street
Use the straight lane.
6
Turn left onto I 90 Business; US 93
0.3 mi·44 sec·I 90 Business; US 93
Toward I 90 West, US 93 North, MT 200 West: Kalispell, Coeur D' Alene
7
Merge onto I 90; US 93; MT 200
169 mi·2 hr 58 min·Jeannette Rankin Memorial Highway
8
Take the exit
0.4 mi·50 sec
Toward Spokane Street
9
Turn right onto I 90 Bus
0.3 mi·1 min·North Spokane Street
10
Turn left onto West 10th Avenue
0.2 mi·38 sec·West 10th Avenue
11
Arrive at destination
West 10th Avenue
Trip Plan
Given the 5 hour and 39 minute duration, you should aim for an early morning departure to maximize daylight hours for navigating the turns. Plan for at least one stop to break up the drive, as the constant steering can be more fatiguing than a standard highway cruise. Because you are relying on local roads, keep a close eye on your fuel gauge and fill up before leaving Salmon to ensure you stay within your $48 budget. Since the route is entirely non-highway, remain mindful of changing speed limits as you transition between local streets and US 93. Flexibility is your best asset here, so don't be afraid to pull over if the technical nature of the road requires a quick rest.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 156.1 miles from Salmon, ID, or about 3h 26m into the drive.
The longest continuous stretch on this route runs about 169.2 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 69 miles or 1h 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 156.1 miles or 3h 26m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 11m
Traffic, exits, and arrival timing usually matter more near Post Falls, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Salmon, ID so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Salmon, ID
This is one driving day of about 312.2 miles and 6h 12m.
Your first comfortable stop window is around 69 miles from Salmon, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Jeannette Rankin Memorial Highway for about 169.2 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 8
5 decision points cluster between mile 0 and 311.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0 mi into trip|~0m in|US 93 / Main Street
Turn left onto US 93 / Main Street
Navigation decision point
4
0.2 mi into trip|~0m in|US 93
Turn slight right onto US 93 toward US 93: Missoula
Lane positioning matters here
Use the straight lane.
Toward US 93: Missoula
5
136.4 mi into trip|~3h 1m in|South Reserve Street
Turn left onto South Reserve Street
Lane positioning matters here
Use the straight lane.
5
141.8 mi into trip|~3h 10m in|I 90 Business; US 93
Turn left onto I 90 Business; US 93 toward I 90 West, US 93 North, MT 200 West: Kalispell, Coeur D' Alene
Multiple destination signs - pick the right one
Toward I 90 West, US 93 North, MT 200 West: Kal...
4
311.4 mi into trip|~6h 9m in
Take the exit toward Spokane Street
Exit ramp - move to the correct lane early
Toward Spokane Street
Fuel & Cost
Regular Gas
$49.47 one way
$98.95 round trip
$4.03/gal25.4 MPG avg109 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$51.86
$103.71
premium
$4.53
$55.69
$111.38
diesel
$5.61
$68.93
$137.86
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$49
Meals
$25–$50
Total
$74–$99
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 109.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $33 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
93.7
1
$32.78
$14.99
Efficient EV
78.1
0
$27.32
$12.49
EV Truck/SUV
124.9
1
$43.71
$19.98
Gas CO2
109 kg
EV CO2
37 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Salmon, ID
Evening
in Salmon on Saturday
Local time
8:44 PM
MDT
Current temp
64°F
Unavailable
Live forecast
Destination
Post Falls, ID
Evening
in Post Falls on Saturday
Local time
7:44 PM
PDT
Current temp
45°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
19 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
6h 12m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a technical, turn-heavy experience behind the wheel rather than a monotonous interstate cruise. With 0% of this route classified as highway travel, you will spend the entire 312.1 miles navigating local roads and regional highways. The drive lacks long, uninterrupted stretches, as the longest segment on Main Street is 0 miles, meaning you will be constantly adjusting to the road's changing geometry. Prepare for a hands-on driving experience that demands focus on every curve and intersection. This is a journey defined by its local character, requiring you to stay alert through the various transitions along the path.
44% highway, the rest on surface roads — varied driving throughout.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 169.2 mi on Jeannette Rankin Memorial Highway.
How Hard Is This Drive?
3/10
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near US 93 / Main Street.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
The route itself is not hard, but at 6h 12m, endurance matters. Plan breaks every 2-3 hours. The 8 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: near the start (US 93 / Main Street): Navigation decision point; at 0.2 miles (US 93): Lane positioning matters here; at 136.4 miles (South Reserve Street): Lane positioning matters here.
Elevation Profile
Gently rolling terrain
3,987 ft2,179 ft
Total Climb
1,639 ft
Total Descent
3,401 ft
Highest Point
3,987 ft
~245.3 mi in
Elevation Range
1,808 ft
Notable High Points
3,987 ft at ~245.3 miles+974 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Salmon, ID to Post Falls, ID, road signs begin pointing toward Coeur D' Alene along the way.
The longest stretch is about 169.2 miles on Jeannette Rankin Memorial Highway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Post Falls, ID before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
Mostly yes along the main roads, but rural stretches through ID can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: near the start (US 93 / Main Street): Navigation decision point; at 0.2 miles (US 93): Lane positioning matters here; at 136.4 miles (South Reserve Street): Lane positioning matters here.
Not recommended in a single day. At 6.2 hours each way, a round trip means 12.4 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Post Falls, ID before the return drive.
