Spanning 170 miles across Washington, this trip from Prosser to Spokane is a straightforward journey typically taking about 3 hours and 8 minutes. You will primarily utilize a combination of I-82, US-12, and US-395 to complete the trek. Since the total drive time is manageable, it works perfectly as a one-day excursion, saving you the need for an overnight stay. Budget approximately $36 for fuel to cover the distance comfortably. Whether you are heading to the city for business or a change of scenery, this route offers a reliable connection between these two Pacific Coast region locations.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
85 miles from Prosser, WA
A natural place for your longest stop of the day
, about 1h 34m into the drive
.
Main Roads
Road
Distance
Duration
US 395
131.2 mi
2h 21m
I 82
18.9 mi
20m
US 12
14.9 mi
16m
I 90
1.8 mi
2m
Wine Country Road
0.8 mi
1m
South Lincoln Street
0.4 mi
1m
Meade Avenue
0.4 mi
1m
West 4th Avenue
0.2 mi
<1m
Longest stretch:
US 395
— 131.2 mi, about 2h 21m
Turn-by-Turn Driving Directions
Step-by-step road directions between Prosser, WA and Spokane, WA.
1
Start on Bennett Avenue
408 ft·19 sec·Bennett Avenue
2
Turn right onto 8th Street
323 ft·19 sec·8th Street
3
Turn left onto Meade Avenue
0.4 mi·1 min·Meade Avenue
4
At end of road, turn right onto Wine Country Road
0.8 mi·1 min·Wine Country Road
5
Take the ramp
0.5 mi·30 sec
6
Merge onto I 82; US 12
19 mi·20 min·I 82; US 12
7
Take the exit onto US 12
15 mi·16 min·US 12
Exit 102Toward I‑182 east, US 12 east: Richland, PascoUse the straight / slight right lanes.
8
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.
9
Keep slight left at fork onto US 395
0.3 mi·34 sec·US 395
Toward US 395
10
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.
11
Merge onto I 90; US 2; US 395
1.8 mi·2 min·I 90; US 2; US 395
12
Take the exit
0.2 mi·31 sec
Toward Maple Street, Lincoln Street, Walnut Street
13
Continue on West 5th Avenue
382 ft·12 sec·West 5th Avenue
14
Turn straight onto West Freeway Avenue
0.2 mi·32 sec·West Freeway Avenue
15
Continue on West 4th Avenue
0.2 mi·31 sec·West 4th Avenue
16
Continue on West 4th Avenue
167 ft·4 sec·West 4th Avenue
17
Continue on South Lincoln Street
0.4 mi·1 min·South Lincoln Street
Use the straight / left lanes.
18
Turn left onto West Main Avenue
0.2 mi·34 sec·West Main Avenue
19
Turn right
26 ft·8 sec
20
Turn left onto South Gorge Trail
157 ft·17 sec·South Gorge Trail
21
Arrive at destination
South Gorge Trail
Trip Plan
To make the most of your 3-hour and 8-minute drive, try to depart early in the morning to avoid any potential traffic buildup as you approach Spokane. While the route is efficient, plan for at least one stop to stretch your legs and break up the long 131.2-mile segment on US-395. Since you are spending roughly $36 on gas, keep an eye on your fuel gauge during the longer highway stretches where services may be more spread out. The flexibility of this shorter trip allows you to easily adjust your schedule based on your personal pace. Always keep your focus sharp during the extended highway portions to stay alert behind the wheel.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 85 miles from Prosser, WA, or about 1h 34m into the drive.
The longest continuous stretch on this route runs about 131.2 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 37 miles or 42m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 85 miles or 1h 34m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 32m
Traffic, exits, and arrival timing usually matter more near Spokane, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Prosser, WA 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 Prosser, WA
This is one driving day of about 170 miles and 3h 8m.
Your first comfortable stop window is around 37 miles from Prosser, WA.
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 US 395 for about 131.2 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 14
5 decision points cluster between mile 20.7 and 168.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
20.7 mi into trip|~24m in|US 12
Take the exit onto US 12 toward I‑182 east, US 12 east: Richland, Pasco
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.
Exit 102
Toward I‑182 east, US 12 east: Richland, Pasco
7
35.6 mi into trip|~40m 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
35.8 mi into trip|~40m in|US 395
Keep slight left at fork onto US 395 toward US 395
Highway fork - watch signs carefully
Toward US 395
7
36.1 mi into trip|~41m 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
5
168.6 mi into trip|~3h 4m in
Take the exit toward Maple Street, Lincoln Street, Walnut Street
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Maple Street, Lincoln Street, Walnut Str...
Fuel & Cost
Regular Gas
$35.58 one way
$71.16 round trip
$5.32/gal25.4 MPG avg60 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$37.31
$74.63
premium
$5.77
$38.60
$77.21
diesel
$5.61
$37.53
$75.07
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$36
Meals
$25–$50
Total
$61–$86
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 59.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $18 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
51
0
$17.85
$8.16
Efficient EV
42.5
0
$14.87
$6.80
EV Truck/SUV
68
0
$23.80
$10.88
Gas CO2
59 kg
EV CO2
20 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 20, 2026
Origin
Prosser, WA
Late night
in Prosser on Tuesday
Local time
1:54 AM
PDT
Current temp
67°F
Unavailable
Live forecast
Destination
Spokane, WA
Late night
in Spokane on Tuesday
Local time
1:54 AM
PDT
Current temp
62°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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
5 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
3h 8m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
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 highly efficient, highway-focused experience, as 98% of this route consists of high-speed travel. You will settle into a steady rhythm quickly, highlighted by a significant 131.2-mile stretch on US-395 that dominates the journey. Because the route is engineered for speed and directness, you won't encounter many technical or slow-moving local roads. It is a practical drive designed for getting you from point A to point B with minimal interruption. Prepare for a consistent, uninterrupted flow that allows you to cover the bulk of the 170 miles with ease.
98% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 131.2 mi on US 395.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on US 395 and I 82. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 20.7 miles in near US 12.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 14 significant decision points across 170 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 20.7 miles (US 12): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.6 miles (US 395): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.8 miles (US 395): Highway fork - watch signs carefully.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Prosser, WA and Spokane, WA, road signs point toward I‑182 East, Pasco and Finley.
Spokane is the second-largest city in Washington State, and the largest between Seattle and Minneapolis. It is the economic hub of the "Inland Empire", a name used for Eastern Washington and the Idaho Panhandle (pre-dating by nearly a century the use of the same title by a region in Southern California). It is at the north edge of the Palouse, where gently rolling hills of wheat fields end at the Spokane River valley.
This article also includes the suburbs of Liberty Lake and Spokane Valley.
Doable as a same-day drive at 3h 8m. Total distance: 170 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 8m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 131.2 miles on US 395. 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 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 Spokane, WA 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.
The main spots that need attention: at 20.7 miles (US 12): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.6 miles (US 395): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.8 miles (US 395): Highway fork - watch signs carefully.
Possible but tiring. At 3.1 hours each way, an in-and-out day trip would put you behind the wheel for 6.3 hours — manageable with a long break at Spokane, WA, but most travelers stay overnight.
