Trip from Post Falls, ID to Boise, ID
Drive Time
7h 27m
Distance
390.4 mi
Route Type
Turn-heavy local drive
Long day tripTrip Overview
The drive from Post Falls, ID to Boise, ID covers 390.4 miles and takes about 7h 27m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on North Spokane Street, Thomas S, I 182 West for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $59.84 one way before food or hotel costs.
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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
195.2 miles from Post Falls, ID
A natural place for your longest stop of the day.
Drive Character
Expect a 7h 27m drive with frequent turns across 390.4 miles of local and secondary roads.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| North Spokane Street | 0 mi | 0m |
| Thomas S | 0 mi | 0m |
| I 182 West | 0 mi | 0m |
| Lewis and Clark Trail | 0 mi | 0m |
| US 395 | 0 mi | 0m |
| Lewis and Clark Trail Highway | 0 mi | 0m |
| US 395 south | 0 mi | 0m |
| Columbia River Highway | 0 mi | 0m |
Step-by-Step Directions
Start on West 10th Avenue
Turn right onto North Spokane Street
Take the ramp right
Keep slight left
Keep slight right to continue on Thomas S. Foley Memorial Highway
Take the exit slight right toward I 182 West, US 395 South: Richland, Pendleton
Merge slight left onto Lewis and Clark Trail
Keep slight right to continue on Lewis and Clark Trail
Continue on North US 395
Continue on Lewis and Clark Trail Highway
Take the exit slight right toward US 395 south, US 730: Umatilla, Hermiston, Irrigon
Keep slight left to continue on US 395 south, US 730: Umatilla, Hermiston, Irrigon
Turn left onto Columbia River Highway
Turn right onto Umatilla-Stanfield Highway
Continue on North 1st Street
Turn left onto East Theater Lane
Turn right onto Northeast 4th Street
Turn left onto Umatilla-Stanfield Highway
Continue on North Main Street
Continue on Umatilla-Stanfield Highway
Take the exit left toward US 395 North: Stanfield
Merge slight left onto Old Oregon Trail Highway
Continue on Idaho Medal of Honor Highway
Continue on Vietnam Veterans Memorial Highway
Keep slight left to continue on Boise Connector
Continue on West Myrtle Street
Turn left onto South 5th Street
Turn left onto West Front Street
Turn right
Arrive at your destination
When to Leave
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.
This is a comfortable same-day trip.
Drive Plan
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 86 miles
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 195.2 miles
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Last hour of driving
Traffic, exits, and arrival timing usually matter more near Boise, ID than in the middle of the route.
Before You Leave
Open the route before leaving Post Falls, 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.
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Trip Strategy
Day 1
Settle into the route from Post Falls, ID
This is one driving day of about 390.4 miles and 7h 27m.
Best Stop Towns on This Route
These towns line up with the pace of this drive and give you clearer places to stop with a purpose.
Late stop town
Meal stop
195 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Travel Advice
Arrival Notes
Seasonal Notes
Stops Along the Way
Halfway Point
Midpoint
About 195.2 mi from Post Falls, ID
A short stop after about 86 miles helps settle the day before fatigue starts building.
The midpoint is around 195.2 miles from Post Falls, ID, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions for the drive, so the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| regular | $3.89 | $59.84 | $119.67 |
| midgrade | $4.23 | $65.03 | $130.06 |
| premium | $4.55 | $69.92 | $139.84 |
| diesel | $5.41 | $83.18 | $166.37 |
Based on 25.4 MPG average. Estimated CO2 emission: 136.6 kg one way.
Frequently Asked Questions
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