Spokane Valley, WA to Mukilteo, WA is 307.6 miles and takes about 5h 46m via I 90 and I 405, with a fuel budget near $69 and enough daylight to finish in a day. This trip stays within Washington State, connecting two points in the Pacific Coast region. It's a straightforward, predominantly highway drive that's well-suited for a single-day transit. You'll find it's a practical option if you're looking to cover ground efficiently between Eastern and Western Washington. Most of the route is on major interstates, making navigation simple.
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
153.8 miles from Spokane Valley, WA
A natural place for your longest stop of the day
, about 2h 49m into the drive
.
Main Roads
Road
Distance
Duration
I 90
267.6 mi
4h 50m
I 405
18.8 mi
23m
Spokane Valley Freeway
11.3 mi
14m
WA 525
5.8 mi
9m
Mukilteo Speedway
1.7 mi
3m
Paine Field Boulevard
0.8 mi
1m
84th Street Southwest
0.4 mi
<1m
North Pines Road
0.2 mi
<1m
Longest stretch:
I 90
— 267.6 mi, about 4h 50m
Traffic on I-90
Hour-of-day weekday pattern from 99 FHWA count stations on your route.
Peak
3 PM
~2,111 veh/hr typical
· worst 2,743
Quietest
2 AM
~121 veh/hr
Peak-to-quiet ratio
17.4×
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 Mukilteo, 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
211 mi·3 hr 50 min·I 90
Use the straight / slight right lanes.
7
Take the exit
0.2 mi·27 sec
Exit 10Toward I 405: Renton, EverettUse the straight / slight right lanes.
8
Keep slight right at fork
0.5 mi·59 sec
Toward I 405 North: Everett, BellevueUse the slight right lane.
9
Merge onto I 405
8.1 mi·10 min·I 405
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 405
8.4 mi·10 min·I 405
Use the straight / slight right lanes.
11
Keep slight right at fork onto I 405
2.3 mi·2 min·I 405
Use the straight / slight right lanes.
12
Continue on WA 525
5.8 mi·9 min·WA 525
Use the straight / slight right lanes.
13
Take the exit
0.2 mi·22 sec
14
Continue on WA 525 Spur
0.8 mi·1 min·Paine Field Boulevard
15
Turn left onto WA 526
0.4 mi·44 sec·84th Street Southwest
Use the straight lane.
16
Turn right onto WA 525
1.7 mi·3 min·Mukilteo Speedway
Use the right lane.
17
Arrive at destination
WA 525
Trip Plan
For this 5-hour, 46-minute drive, leaving Spokane Valley in the morning is ideal to maximize daylight and avoid potential evening traffic. Since it's a single-day trip, you have flexibility, but consider breaking it up with a brief stop around the halfway point. The longest stretch on I 90 is over 260 miles, so plan for a fuel stop before you start the longest leg if your tank is low. Keep an eye on the fuel cost estimate of $69 to budget accordingly for this predominantly highway route.
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 153.8 miles from Spokane Valley, WA, or about 2h 49m into the drive.
The longest continuous stretch on this route runs about 267.6 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 68 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 153.8 miles or 2h 49m 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 36m
Traffic, exits, and arrival timing usually matter more near Mukilteo, 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 307.6 miles and 5h 46m.
Your first comfortable stop window is around 68 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 267.6 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 12
5 decision points cluster between mile 0.2 and 288.2 — 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
279.4 mi into trip|~5h 6m in
Take the exit toward I 405: Renton, Everett
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 10
Toward I 405: Renton, Everett
8
279.6 mi into trip|~5h 6m in
Keep slight right at fork toward I 405 North: Everett, Bellevue
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 405 North: Everett, Bellevue
6
288.2 mi into trip|~5h 17m in|I 405
Keep slight right at fork onto I 405
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Fuel & Cost
Regular Gas
$68.16 one way
$136.31 round trip
$5.63/gal25.4 MPG avg108 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.91
$71.51
$143.02
premium
$6.08
$73.63
$147.26
diesel
$5.35
$64.79
$129.58
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$68
Meals
$25–$50
Total
$93–$118
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 107.6 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
92.3
1
$32.30
$14.76
Efficient EV
76.9
0
$26.92
$12.30
EV Truck/SUV
123
1
$43.06
$19.69
Gas CO2
108 kg
EV CO2
36 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 May 25, 2026
Origin
Spokane Valley, WA
Evening
in Spokane Valley on Wednesday
Local time
6:38 PM
PDT
Current temp
83°F
Mostly Sunny then Chance Showers And Thunderstorms
S 6 mph37% chanceLive forecast
Wind Advisory
Wind Advisory issued May 25 at 4:56AM PDT until May 25 at 11:00PM PDT by NWS Pendleton OR
Flood Warning
Flood Warning issued May 24 at 11:37AM PDT by NWS Spokane WA
Destination
Mukilteo, WA
Evening
in Mukilteo on Wednesday
Local time
6:38 PM
PDT
Current temp
60°F
Light Rain Likely
S 16 mph60% chanceLive forecast
Wind Advisory
Wind Advisory issued May 25 at 4:56AM PDT until May 25 at 11:00PM PDT by NWS Pendleton OR
Flood Warning
Flood Warning issued May 24 at 11:37AM 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
23 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
5h 46m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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...
9 mi from route
~21 min detour
Free
near mile 286.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a nearly all highway trip, with 99% of the 307.6 miles on major roads. You'll experience a long stretch of 267.6 miles primarily on I 90. The Spokane Valley Freeway is also part of your initial path. Expect the transition from primarily highway driving to surface roads to occur very late in your trip, close to Mukilteo. Given the extensive highway miles, anticipate straightforward cruising with fewer interruptions until you approach your destination.
99% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 267.6 mi on I 90.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 90 and I 405. 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 Effort8/10
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 307.6 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 279.4 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
2,419 ft112 ft
Total Climb
1,902 ft
Total Descent
3,803 ft
Highest Point
2,419 ft
~22 mi in
Elevation Range
2,307 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Spokane Valley, WA and Mukilteo, WA, road signs point toward Everett and Bellevue.
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.
Mukilteo is a city on the Puget Sound of Washington State. What looks like a village surrounding the ferry harbor to Whidbey Island is surrounded by Boeing's sprawling aircraft factory complex.
Top landmarks
•Mukilteo Light — lighthouse in Washington, United States
Doable as a same-day drive at 5h 46m. Total distance: 307.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 46m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (99%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 267.6 miles on I 90. 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 Mukilteo, 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 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 279.4 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 5.8 hours each way, a round trip means 11.5 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Mukilteo, WA before the return drive.
