Trip from Post Falls, ID to Boise, ID

Drive Time

8h 12m

Distance

445.5 mi

717 km

Drive Score

7/10

Good drive

Same Day?

2-day trip

Fuel Cost

$71

one way

EV Charging

station data

Best Time to Leave

Save up to 24 min

4 AM

8h 4m ★

6 AM

8h 12m

8 AM

8h 28m

10 AM

8h 18m

12 PM

8h 16m

3 PM

8h 19m

5 PM

8h 28m

8 PM

8h 8m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly

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Post Falls, ID

Daniil Komov

Boise, ID

Brett Sayles

Trip Overview

Traveling from Post Falls to Boise covers 445.5 miles and typically takes about 8 hours and 12 minutes of pure driving time. Because of the duration, this trip is best approached as a two-day journey rather than a single grueling day behind the wheel. You will primarily navigate via the Old Oregon Trail Highway, the Thomas S. Foley Memorial Highway, and I-90. Budgeting roughly $71 for fuel is a solid baseline for your planning. Since both cities are located within the Mountain West, you will stay within the same regional climate, though the landscape shifts as you move across the state.

Trip Pace

Best split across 2 days

Treat the return leg as its own travel day rather than an afterthought.

Break Rhythm

2 planned breaks

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

222.8 miles from Post Falls, ID

A natural place for your longest stop of the day , about 4h 11m into the drive .

Drive Character

Expect a varied experience that transitions from fast interstate travel to turn-heavy local stretches. Only 19% of your total mileage is on major highways, meaning you will spend significant time navigating local roads that demand more focus than a standard freeway cruise. The longest uninterrupted portion of your trip is a 215.2-mile stretch along the Old Oregon Trail Highway, which serves as the backbone of your journey. Be prepared for the road’s personality to shift as you move away from the interstate, as the route requires more active steering and attention than a straight-line highway grind.

This route has more turning and local-road decision points than a simple highway run.

There are about 30 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Old Oregon Trail Highway is the longest continuous segment at about 215.2 miles.

How Hard Is This Drive?

Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.5 miles in near I 90 Bus.

Route Complexity 9/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 20 significant decision points across 445.5 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 0.5 miles (I 90 Bus): Lane positioning matters here; at 83.3 miles (US 395 / Thomas S. Foley Memorial Highway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 159.4 miles (US 395 / Lewis and Clark Trail): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 20 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

0.5 mi into trip | ~1m in | I 90 Bus

Take the ramp onto I 90 Bus

Lane positioning matters here

Use the none lane.

83.3 mi into trip | ~1h 33m in | US 395 / Thomas S. Foley Memorial Highway

Keep slight right at fork onto US 395 / Thomas S. Foley Memorial Highway toward Ritzville, Pasco

Highway fork - watch signs carefully. Multiple destination signs - pick the right one

Toward Ritzville, Pasco

159.4 mi into trip | ~2h 56m in | US 395 / Lewis and Clark Trail

Keep slight right at fork onto US 395 / Lewis and Clark Trail toward US 395: Kennewick, Pendleton, Columbia Basin College, Tri Cities Airport

Highway fork - watch signs carefully. Multiple destination signs - pick the right one

Toward US 395: Kennewick, Pendleton, Columbia B...

188.2 mi into trip | ~3h 31m in | US 395

Keep slight left at fork onto US 395 toward US 395 south, US 730: Umatilla, Hermiston, Irrigon

Highway fork - watch signs carefully. Multiple destination signs - pick the right one

Toward US 395 south, US 730: Umatilla, Hermisto...

439.9 mi into trip | ~8h 3m in | I 184 / Boise Connector

Keep slight left at fork onto I 184 / Boise Connector

Highway fork - watch signs carefully. Lane positioning matters here

Use the none lane. Exit 49

Towns Along This Route

Between Post Falls, ID and Boise, ID, road signs point toward Ritzville, Pasco, Pendleton, Columbia Basin College, Tri Cities Airport and Hermiston - among others.

Ritzville

83.3 mi in | ~1h 33m | via US 395

Pasco

83.3 mi in | ~1h 33m | via US 395

Pendleton

157 mi in | ~2h 53m | via US 395

Columbia Basin College

159.4 mi in | ~2h 56m | via US 395

Tri Cities Airport

159.4 mi in | ~2h 56m | via US 395

Hermiston

188 mi in | ~3h 31m | via US 395

Irrigon

188 mi in | ~3h 31m | via US 395

Main Roads

Road	Distance	Duration
Old Oregon Trail Highway	215.2 mi	3h 48m
Thomas S. Foley Memorial Highway	73.7 mi	1h 19m
I 90	56.6 mi	1h
I 90 Bus	26.2 mi	31m
Lewis and Clark Trail Highway	23.7 mi	26m
Vietnam Veterans Memorial Highway	21.7 mi	25m
Umatilla-Stanfield Highway	8.4 mi	9m
Lewis and Clark Trail	5.7 mi	7m

Longest stretch: Old Oregon Trail Highway — 215.2 mi, about 3h 48m

Turn-by-Turn Driving Directions

Step-by-step road directions between Post Falls, ID and Boise, ID.

Start on West 10th Avenue

0.2 mi · 40 sec · West 10th Avenue

Turn right onto North Spokane Street

0.3 mi · 59 sec · North Spokane Street

Take the ramp onto I 90 Bus

26 mi · 31 min · I 90 Bus

Use the none lane.

Keep slight left at fork onto I 90; US 395

57 mi · 1 hr · I 90; US 395

Keep slight right at fork onto US 395

74 mi · 1 hr 19 min · Thomas S. Foley Memorial Highway

Toward Ritzville, Pasco

Take the exit onto US 395

0.6 mi · 1 min · US 395

Toward I 182 West, US 395 South: Richland, Pendleton

Merge onto I 182; US 12; US 395

1.9 mi · 2 min · Lewis and Clark Trail

Keep slight right at fork onto US 395

3.8 mi · 5 min · Lewis and Clark Trail

Toward US 395: Kennewick, Pendleton, Columbia Basin College, Tri Cities Airport

Continue on US 395

1.1 mi · 2 min · North US 395

Continue on US 395

24 mi · 26 min · Lewis and Clark Trail Highway

Use the none lane.

Take the exit onto US 395

0.2 mi · 22 sec · US 395

Toward US 395 south, US 730: Umatilla, Hermiston, Irrigon

Keep slight left at fork onto US 395

171 ft · 10 sec · US 395

Toward US 395 south, US 730: Umatilla, Hermiston, Irrigon

Turn left onto US 395; US 730

0.8 mi · 57 sec · Columbia River Highway

Turn right onto US 395

3.8 mi · 4 min · Umatilla-Stanfield Highway

Continue on US 395

0.5 mi · 44 sec · North 1st Street

Turn left onto East Theater Lane

0.3 mi · 40 sec · East Theater Lane

Turn right onto Northeast 4th Street

1.6 mi · 2 min · Northeast 4th Street

Turn left onto US 395

3.2 mi · 3 min · Umatilla-Stanfield Highway

Continue on US 395

2.0 mi · 2 min · North Main Street

Continue on US 395

1.4 mi · 1 min · Umatilla-Stanfield Highway

Take the exit onto US 395

0.5 mi · 1 min · US 395

Toward US 395 North: Stanfield

Merge onto I 84; US 30; US 395

215 mi · 3 hr 48 min · Old Oregon Trail Highway

Use the straight / slight right lanes.

Continue on I 84; US 20; US 26; US 30

0.7 mi · 47 sec · Idaho Medal of Honor Highway

Continue on I 84; US 20; US 26; US 30

22 mi · 25 min · Vietnam Veterans Memorial Highway

Use the none / straight / slight right lanes.

Keep slight left at fork onto I 184

4.7 mi · 6 min · Boise Connector

Exit 49 Use the none lane.

Continue on US 20; US 26

0.6 mi · 1 min · West Myrtle Street

Use the straight / left / none lanes.

Turn left onto South 5th Street

0.1 mi · 26 sec · South 5th Street

Turn left onto US 20; US 26

0.1 mi · 19 sec · West Front Street

Turn right

55 ft · 4 sec

Arrive at destination

Trip Plan

Planning for two days of travel is the best way to manage this 445.5-mile route comfortably. With two suggested stops along the way, you can easily break up the drive to avoid fatigue. Since a large portion of the trip involves local roads rather than high-speed interstates, keep an eye on your pace, as the turns will likely slow your progress more than you might expect. Prioritize refueling before hitting the longer, more remote stretches of the Old Oregon Trail Highway to ensure you don't get caught low on gas. Leaving early in the morning allows you to tackle the more technical, turn-heavy sections in daylight when visibility is at its best.

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 drive is better paced as a 2-day trip.

Plan roughly 2 meaningful breaks for fuel, food, and rest.

The halfway point lands around 222.8 miles from Post Falls, ID, or about 4h 11m into the drive.

The longest continuous stretch on this route runs about 215.2 miles.

Consider an overnight stop or starting very early.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 98 miles or 1h 49m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 222.8 miles or 4h 11m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Overnight split

Day 1 wrap after about 222.8 miles or 4h 11m

Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.

Final approach

Final hour starts around 7h 4m

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.

Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.

Day 1

Settle into the route from Post Falls, ID

Aim for roughly 223 miles and 4.1 hours of wheel time on this day.

Day 2

Finish the approach into Boise, ID

Aim for roughly 223 miles and 4.1 hours of wheel time on this day.

Your first comfortable stop window is around 98 miles from Post Falls, ID.

This route usually feels better as a 2-day drive than as one long push.

Plan about 2 real breaks rather than only quick fuel stops.

The longest stretch is on Old Oregon Trail Highway for about 215.2 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 222.8 mi from Post Falls, ID · 4h 11m into the drive

Mid-route town

Overnight candidate

College Place, WA

223 mi into the route

Best for: Hotel check-in, dinner, and a fresh start

This lines up well with a realistic day-end stop if you are breaking the drive into stages.

Find hotels in College Place, WA

Overnight Options

Night 1

College Place, WA

223 mi · about 4.1h in

A practical overnight split lands near College Place, WA after about 223 miles or 4.1 hours of driving.

Find hotels

Pacing Suggestions

Moses Lake, WA

Fuel and coffee

A short stop after about 98 miles helps settle the day before fatigue starts building.

College Place, WA

Meal break

The midpoint is around 222.8 miles from Post Falls, ID, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before Old Oregon Trail Highway if your tank is already low. That segment runs about 215.2 miles.

Overnight split

Hotel stop

For a steadier pace, wrap day one after about 223 miles or 4.1 hours on the road.

Arriving in Boise, ID

The final approach into Boise, ID usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Boise, ID.

On a multi-day trip, keep the last day a little lighter so you reach Boise, ID with some flexibility left in the schedule.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$70.60 one way

$141.19 round trip

$4.03/gal 25.4 MPG avg 156 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.23	$74.21	$148.42
premium	$4.53	$79.44	$158.87
diesel	$5.64	$98.97	$197.95

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$71

Hotel (1n)

$80–$140

Meals

$50–$100

Total

$201–$311

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 155.9 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $47 in charging · 1 stop · 67% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	133.7	1	$46.78	$21.38
Efficient EV	111.4	1	$38.98	$17.82
EV Truck/SUV	178.2	2	$62.37	$28.51

Gas CO2

156 kg

EV CO2

52 kg (67% 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 data refreshed 3 days ago

Origin

Post Falls, ID

Afternoon in Post Falls on Sunday

Local time

4:40 PM

PDT

Current temp

33°F

Unavailable

Live forecast

Destination

Boise, ID

Evening in Boise on Sunday

Local time

5:40 PM

MDT

Current temp

40°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.

For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.

Time zone

1 hour later

The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.

Temperature spread

7 degrees warmer at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

8h 12m on the road

This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from Post Falls, ID to Boise, ID covers 445.5 miles and takes about 8h 12m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Old Oregon Trail Highway, Thomas S. Foley Memorial Highway, I 90. Expect a mix of highway and local road driving.

Consider an overnight stop or starting very early.

Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 223 miles on day one.

The midpoint is about 222.8 miles from Post Falls, ID. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $70.60 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Between Post Falls, ID and Boise, ID, road signs point toward Ritzville, Pasco, Pendleton, Columbia Basin College, Tri Cities Airport and Hermiston - among others.

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Trip from Post Falls, ID to Boise, ID

Best Time to Leave

Trip Overview

Drive Character

How Hard Is This Drive?

Critical Maneuvers

Towns Along This Route

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Overnight Options

Pacing Suggestions

Arriving in Boise, ID

Fuel & Cost

Travel Intel

Post Falls, ID

Boise, ID

1 hour later

7 degrees warmer at arrival

8h 12m on the road

Frequently Asked Questions

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