Spanning 448.4 miles from Caldwell to Priest River, this journey across Idaho takes approximately 8 hours and 35 minutes of pure drive time. Because of the length, it is best approached as a two-day trip rather than a grueling single-day haul. You should budget about $71 for fuel to cover the distance between these two Mountain West locations. While the route is straightforward, the sheer mileage makes an overnight stop highly recommended to keep you fresh behind the wheel. Use this travel plan if you are looking to traverse the state efficiently while balancing road time with necessary rest.
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
224.2 miles from Caldwell, ID
A natural place for your longest stop of the day
, about 4h 2m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
215.6 mi
3h 49m
US 395
131.7 mi
2h 23m
North Newport Highway
41 mi
55m
McNary Highway
20.4 mi
21m
US 2
12.2 mi
24m
Umatilla-Stanfield Highway
8.2 mi
9m
Lewis and Clark Trail
4.9 mi
6m
Lewis and Clark Trail Highway
3.3 mi
4m
Longest stretch:
Vietnam Veterans Memorial Highway
— 215.6 mi, about 3h 49m
Turn-by-Turn Driving Directions
Step-by-step road directions between Caldwell, ID and Priest River, ID.
1
Start on this road
90 ft·11 sec·this road
2
Turn left onto I 84 Business
72 ft·4 sec·Cleveland Boulevard
3
Turn right
141 ft·12 sec
4
Turn right
150 ft·12 sec
5
Turn right onto South 10th Avenue
0.7 mi·1 min·South 10th Avenue
6
Continue on North Illinois Avenue
0.1 mi·24 sec·North Illinois Avenue
7
Take the ramp onto I 84, US 20, US 26, US 30
0.2 mi·27 sec·I 84, US 20, US 26, US 30
8
Merge onto I 84; US 20; US 26; US 30
216 mi·3 hr 49 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
9
Take the exit onto US 395
0.3 mi·41 sec·US 395
Toward US 395 North: Stanfield, Hermiston
10
Continue on US 395
1.2 mi·1 min·Umatilla-Stanfield Highway
11
Continue on US 395
2.0 mi·2 min·South Main Street
12
Continue on US 395
3.2 mi·3 min·Umatilla-Stanfield Highway
13
Turn right onto Southeast 4th Street
1.6 mi·3 min·Southeast 4th Street
14
Turn left onto East Theater Lane
0.3 mi·41 sec·East Theater Lane
15
Turn right onto US 395
0.5 mi·38 sec·North 1st Street
16
Continue on US 395
3.8 mi·4 min·Umatilla-Stanfield Highway
17
Turn left onto US 395; US 730
0.7 mi·48 sec·Columbia River Highway
Use the straight / left lanes.
18
Take the exit onto US 395
0.2 mi·27 sec·US 395
Toward I 82 West, US 395 North: Kennewick, Yakima
19
Merge onto I 82; US 395
20 mi·21 min·McNary Highway
20
Keep slight right at fork onto US 395
3.3 mi·4 min·Lewis and Clark Trail Highway
Toward US 395 north to I‑182: Kennewick, Pasco, Spokane
21
Continue on US 395
1.1 mi·2 min·South US 395
22
Continue on US 395
4.9 mi·6 min·Lewis and Clark Trail
Use the straight / slight right lanes.
23
Take the exit onto US 395
0.2 mi·21 sec·US 395
Toward US 395 north, SR 397 south (Oregon Street): Spokane, FinleyUse the straight / slight right lanes.
24
Keep slight left at fork onto US 395
0.3 mi·34 sec·US 395
Toward US 395
25
Keep slight right at fork onto US 395
131 mi·2 hr 20 min·US 395
Toward US 395 North: SpokaneUse the slight right lane.
26
Merge onto I 90; US 2; US 395
2.9 mi·3 min·I 90; US 2; US 395
27
Take the exit onto US 2; US 395
0.2 mi·32 sec·US 2; US 395
Toward US 395 North, US 2 East: Colville, Newport
28
Keep slight left at fork onto US 2; US 395
6.1 mi·14 min·US 2; US 395
29
Keep slight right at fork onto US 2
2.2 mi·3 min·North Newport Highway
30
Continue on US 2
212 ft·13 sec·North Newport Highway
31
Enter roundabout onto US 2
161 ft·9 sec·North Newport Highway
32
Continue on US 2
39 mi·51 min·North Newport Highway
33
Turn slight right onto South Union Avenue
251 ft·17 sec·South Union Avenue
34
Turn left onto West 4th Street
0.1 mi·38 sec·West 4th Street
35
Turn left onto ID 41
0.4 mi·40 sec·South State Avenue
36
Turn right onto US 2
5.8 mi·9 min·US 2
Use the straight lane.
37
Turn left onto ID 57
488 ft·13 sec·State Highway 57
38
Turn right onto East Jackson Avenue
0.1 mi·29 sec·East Jackson Avenue
39
Turn right onto 7th Street
288 ft·12 sec·7th Street
40
Continue on Summit Boulevard
386 ft·17 sec·Summit Boulevard
41
Arrive at destination
Summit Boulevard
Trip Plan
To manage the 448.4-mile trek effectively, plan for at least two intentional stops to break up the monotony. Leaving early in the morning is your best strategy to avoid fatigue and ensure you reach your destination before dark. Since the Vietnam Veterans Memorial Highway accounts for your longest stretch of 215.6 miles, check your fuel levels before merging onto that section to avoid unnecessary detours. Flexibility is key on this route, so don't hesitate to adjust your pacing if weather or traffic conditions shift. By splitting the drive over two days as recommended, you can make the transition between the southern and northern parts of the state much more manageable.
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 224.2 miles from Caldwell, ID, or about 4h 2m into the drive.
The longest continuous stretch on this route runs about 215.6 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 99 miles or 1h 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 224.2 miles or 4h 2m 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 224.2 miles or 4h 2m
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 5m
Traffic, exits, and arrival timing usually matter more near Priest River, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Caldwell, 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 Caldwell, ID
Aim for roughly 224 miles and 4.3 hours of wheel time on this day.
Day 2
Finish the approach into Priest River, ID
Aim for roughly 224 miles and 4.3 hours of wheel time on this day.
Your first comfortable stop window is around 99 miles from Caldwell, 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 Vietnam Veterans Memorial Highway for about 215.6 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 28
5 decision points cluster between mile 230.4 and 260.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
230.4 mi into trip|~4h 10m in|US 395
Take the exit onto US 395 toward I 82 West, US 395 North: Kennewick, Yakima
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 82 West, US 395 North: Kennewick, Yaki...
6
251 mi into trip|~4h 32m in|US 395 / Lewis and Clark Trail Highway
Keep slight right at fork onto US 395 / Lewis and Clark Trail Highway toward US 395 north to I‑182: Kennewick, Pasco, Spokane
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward US 395 north to I‑182: Kennewick, Pasco,...
7
260.3 mi into trip|~4h 46m in|US 395
Take the exit onto US 395 toward US 395 north, SR 397 south (Oregon Street): Spokane, Finley
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward US 395 north, SR 397 south (Oregon Stree...
6
260.5 mi into trip|~4h 47m in|US 395
Keep slight left at fork onto US 395 toward US 395
Highway fork - watch signs carefully
Toward US 395
7
260.7 mi into trip|~4h 47m in|US 395
Keep slight right at fork onto US 395 toward US 395 North: Spokane
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward US 395 North: Spokane
Fuel & Cost
Regular Gas
$71.06 one way
$142.11 round trip
$4.03/gal25.4 MPG avg157 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$74.48
$148.96
premium
$4.53
$79.99
$159.98
diesel
$5.61
$99.00
$198.00
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: 156.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $47 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
134.5
1
$47.08
$21.52
Efficient EV
112.1
1
$39.23
$17.94
EV Truck/SUV
179.4
2
$62.78
$28.70
Gas CO2
157 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 as of Apr 12, 2026
Origin
Caldwell, ID
Evening
in Caldwell on Saturday
Local time
7:08 PM
MDT
Current temp
62°F
Unavailable
Live forecast
Destination
Priest River, ID
Evening
in Priest River on Saturday
Local time
6:08 PM
PDT
Current temp
42°F
Patchy Fog
E 1 mph18% chanceLive 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 earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
20 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
8h 35m 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.
More Details
What kind of drive is this?
This trip offers a mixed driving profile, requiring you to navigate various road types as you head north. You will spend roughly 33% of your time on highways, with the Vietnam Veterans Memorial Highway serving as the backbone of your journey. Be prepared for a long haul, as the longest uninterrupted stretch covers 215.6 miles on that specific highway. As you transition onto US 395 and the North Newport Highway, the character of the road shifts, demanding your attention through changing terrain. Expect a varied experience that moves from high-speed transit to more localized driving conditions.
33% highway, the rest on surface roads — varied driving throughout.
41 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 215.6 mi on Vietnam Veterans Memorial Highway.
How Hard Is This Drive?
9/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 230.4 miles in near US 395.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 28 significant decision points across 448.4 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 230.4 miles (US 395): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 251 miles (US 395 / Lewis and Clark Trail Highway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 260.3 miles (US 395): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
4,007 ft2,376 ft
Total Climb
1,631 ft
Total Descent
1,093 ft
Highest Point
4,007 ft
~93.4 mi in
Elevation Range
1,631 ft
Notable High Points
4,007 ft at ~93.4 miles+1,093 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Caldwell, ID and Priest River, ID, road signs point toward Hermiston, Yakima, Pasco, Spokane, Finley and Newport.
Hermiston
216.7 mi in|~3h 52m|via US 395
Yakima
230.4 mi in|~4h 10m|via US 395
Pasco
251 mi in|~4h 32m|via US 395
Spokane
251 mi in|~4h 32m|via US 395
Finley
260.3 mi in|~4h 46m|via US 395
Newport
394.3 mi in|~7h 12m|via US 2; US 395
Who Is This Route For?
Solo Traveler
8h 35m drive, plan rest stops for pacing.
Scenic Drive
Mixed highway & surface route profile.
Frequently Asked Questions
The longest stretch is about 215.6 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 224 miles on day one.
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 route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Priest River, 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 2 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: at 230.4 miles (US 395): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 251 miles (US 395 / Lewis and Clark Trail Highway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 260.3 miles (US 395): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Not recommended in a single day. At 8.6 hours each way, a round trip means 17.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Priest River, ID before the return drive.
