Spokane Valley, WA to Vashon, WA is 303.1 miles and takes about 6h 4m via I 90, with a fuel budget near $67 and enough daylight to finish in a day. This trip moves you across Washington State, from the Pacific Coast region near Spokane to the Pacific Coast region near Seattle. It's a mostly highway drive that's well-suited for a single day, assuming you're comfortable with a longer stretch of driving. Factor in the fuel cost and the 6-hour estimated duration when planning your departure time.
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
151.5 miles from Spokane Valley, WA
A natural place for your longest stop of the day
, about 2h 47m into the drive
.
Main Roads
Road
Distance
Duration
I 90
275.3 mi
5h
Spokane Valley Freeway
11.3 mi
14m
Vashon Highway Southwest
3.8 mi
6m
Fauntleroy Way Southwest
3.7 mi
10m
Fauntleroy - Vashon Island Ferry
3.4 mi
20m
West Seattle Bridge
2.2 mi
3m
103rd Avenue Southwest
0.7 mi
1m
Ferry Dock
0.2 mi
1m
Longest stretch:
I 90
— 275.3 mi, about 5h
Traffic on I-90
Hour-of-day weekday pattern from 111 FHWA count stations on your route.
Peak
4 PM
~2,346 veh/hr typical
· worst 2,927
Quietest
2 AM
~127 veh/hr
Peak-to-quiet ratio
18.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Spokane Valley, WA and Vashon, WA.
1
Start on WA 27
0.2 mi·27 sec·North Pines Road
Use the left lane.
2
Turn left onto East Montgomery Avenue
155 ft·6 sec·East Montgomery Avenue
Use the left lane.
3
Take the ramp
0.3 mi·42 sec
4
Merge onto I 90
11 mi·14 min·Spokane Valley Freeway
5
Keep slight left at fork onto I 90; US 395
57 mi·1 hr·I 90; US 395
6
Keep slight left at fork onto I 90
219 mi·3 hr 59 min·I 90
Use the straight / slight right lanes.
7
Take the exit
1.3 mi·1 min
Exit 2BToward I 5 South: Portland, TacomaUse the slight left lane.
8
Take the exit
0.1 mi·19 sec
Exit 163AToward West Seattle Bridge, Columbian WayUse the slight right lane.
9
Keep slight right at fork
0.4 mi·50 sec
Toward Spokane Street, West Seattle Bridge
10
Continue on West Seattle Bridge
2.2 mi·3 min·West Seattle Bridge
Use the straight / slight right lanes.
11
Continue on Fauntleroy Way Southwest
3.7 mi·10 min·Fauntleroy Way Southwest
Use the straight / right lanes.
12
Keep slight right at fork onto Southwest Barton Street
171 ft·2 sec·Southwest Barton Street
13
Turn slight right onto Fauntleroy Ferry Terminal
0.1 mi·12 sec·Fauntleroy Ferry Terminal
14
Turn straight onto WA 160
3.4 mi·20 min·Fauntleroy - Vashon Island Ferry
15
Continue on Ferry Dock
0.2 mi·1 min·Ferry Dock
16
Turn right onto 103rd Avenue Southwest
0.7 mi·1 min·103rd Avenue Southwest
17
At end of road, turn right onto Vashon Highway Southwest
3.8 mi·6 min·Vashon Highway Southwest
18
Turn left onto Southwest Bank Road
162 ft·6 sec·Southwest Bank Road
19
Turn right onto 98th Place Southwest
26 ft·1 sec·98th Place Southwest
20
Arrive at destination
98th Place Southwest
Trip Plan
Given the 6-hour estimated drive time and 303.1 miles, starting early in the morning is your best bet to avoid afternoon traffic, especially as you approach the Seattle area. The longest stretch is 275.3 miles on I 90, so plan your fuel stops accordingly. While this route is designed for a single day, the 6-hour duration means you'll want to be mindful of your energy levels. Consider a brief stop around the halfway point to stretch and refresh. The fuel cost is estimated at $67, so ensure your tank is full before departing Spokane Valley.
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 151.5 miles from Spokane Valley, WA, or about 2h 47m into the drive.
The longest continuous stretch on this route runs about 275.3 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 67 miles or 1h 14m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 151.5 miles or 2h 47m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 33m
Traffic, exits, and arrival timing usually matter more near Vashon, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Spokane Valley, 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 Spokane Valley, WA
This is one driving day of about 303.1 miles and 6h 4m.
Your first comfortable stop window is around 67 miles from Spokane Valley, 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 I 90 for about 275.3 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 12
5 decision points cluster between mile 0.2 and 288.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.2 mi into trip|~0m in|East Montgomery Avenue
Turn left onto East Montgomery Avenue
Lane positioning matters here
Use the left lane.
6
68.4 mi into trip|~1h 16m in|I 90
Keep slight left at fork onto I 90
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
287.1 mi into trip|~5h 15m in
Take the exit toward I 5 South: Portland, Tacoma
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Exit 2B
Toward I 5 South: Portland, Tacoma
8
288.4 mi into trip|~5h 17m in
Take the exit toward West Seattle Bridge, Columbian Way
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 163A
Toward West Seattle Bridge, Columbian Way
6
288.5 mi into trip|~5h 18m in
Keep slight right at fork toward Spokane Street, West Seattle Bridge
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward Spokane Street, West Seattle Bridge
Fuel & Cost
Regular Gas
$67.16 one way
$134.32 round trip
$5.63/gal25.4 MPG avg106 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.91
$70.46
$140.93
premium
$6.08
$72.55
$145.11
diesel
$5.35
$63.84
$127.68
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$67
Meals
$25–$50
Total
$92–$117
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 106 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $32 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
90.9
1
$31.83
$14.55
Efficient EV
75.8
0
$26.52
$12.12
EV Truck/SUV
121.2
1
$42.43
$19.40
Gas CO2
106 kg
EV CO2
35 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 Jun 3, 2026
Origin
Spokane Valley, WA
Evening
in Spokane Valley on Wednesday
Local time
5:03 PM
PDT
Current temp
77°F
Chance Rain Showers
SW 1 to 7 mph42% chanceLive forecast
Wind Advisory
Wind Advisory issued June 3 at 1:58AM PDT until June 4 at 12:00AM PDT by NWS Pendleton OR
Flood Warning
Flood Warning issued June 2 at 12:07PM PDT by NWS Spokane WA
Destination
Vashon, WA
Evening
in Vashon on Wednesday
Local time
5:03 PM
PDT
Current temp
66°F
Mostly Cloudy
SSW 13 mph6% chanceLive forecast
Wind Advisory
Wind Advisory issued June 3 at 1:58AM PDT until June 4 at 12:00AM PDT by NWS Pendleton OR
Flood Warning
Flood Warning issued June 2 at 12:07PM PDT by NWS Spokane WA
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
11 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 4m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Klondike Gold Rush - Seattle Unit National Historical Park
National Historical Park
Seattle flourished during and after the Klondike Gold Rush. Merchants supplied people from around the world passing through this port city on their way to a remarkable adventure in the Yukon Territory...
4 mi from route
~10 min detour
Free
near mile 292.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly on highways, with 95% of the route utilizing major roads like I 90. You'll experience a substantial 275.3-mile stretch on I 90 before transitioning to surface roads for the final leg. Expect a consistent cruising experience for most of the trip, with the bulk of the driving on the interstate. The transition to Vashon Highway Southwest marks the end of the high-speed highway portion.
95% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 275.3 mi on I 90.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 90 and Spokane Valley Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.2 miles in near East Montgomery Avenue.
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 12 significant decision points across 303.1 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 0.2 miles (East Montgomery Avenue): Lane positioning matters here; at 68.4 miles (I 90): Highway fork - watch signs carefully. Lane positioning matters here; at 287.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
2,768 ft65 ft
Total Climb
2,815 ft
Total Descent
4,448 ft
Highest Point
2,768 ft
~238.1 mi in
Elevation Range
2,702 ft
Notable High Points
2,768 ft at ~238.1 miles+648 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 Spokane Valley, WA to Vashon, WA, road signs begin pointing toward Tacoma along the way.
Tacoma
287.1 mi in|~5h 15m
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
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 6h 4m. Total distance: 303.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 4m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 275.3 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 21 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Vashon, 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. There are 21 rest areas along the route for bathroom stops.
The main spots that need attention: at 0.2 miles (East Montgomery Avenue): Lane positioning matters here; at 68.4 miles (I 90): Highway fork - watch signs carefully. Lane positioning matters here; at 287.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Klondike Gold Rush - Seattle Unit National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.1 hours each way, a round trip means 12.1 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Vashon, WA before the return drive.
