Connecting Lacey to Spokane Valley requires a 325.6-mile trek across Washington state, a journey that typically takes about 6 hours and 8 minutes. Because this trip is entirely highway-focused, you can comfortably complete it in a single day, though it is a significant amount of time behind the wheel. Expect to budget roughly $68 for fuel to cover the distance. While the drive remains within the Pacific Coast region, the landscape shifts as you transition from the coastal area toward the eastern portion of the state. It is a straightforward route that prioritizes efficiency over local detours, making it an ideal choice for travelers who need to reach their destination reliably.
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
162.8 miles from Lacey, WA
A natural place for your longest stop of the day
, about 3h 9m into the drive
.
Main Roads
Road
Distance
Duration
I 90
263.1 mi
4h 46m
I 5
32.2 mi
40m
State Route 18
27.3 mi
34m
College Street Southeast
1 mi
2m
Martin Way East
0.3 mi
<1m
Snoqualmie Parkway
0.1 mi
<1m
North Pines Road
<0.1 mi
<1m
Longest stretch:
I 90
— 263.1 mi, about 4h 46m
Traffic on I-5
Hour-of-day weekday pattern from 174 FHWA count stations on your route.
Peak
4 PM
~5,277 veh/hr typical
Quietest
2 AM
~545 veh/hr
Peak-to-quiet ratio
9.7×
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 Lacey, WA and Spokane Valley, WA.
1
Start on College Street Southeast
1.0 mi·2 min·College Street Southeast
2
Turn right onto Martin Way East
0.3 mi·33 sec·Martin Way East
3
Take the ramp
0.2 mi·24 sec
Toward I 5 North: Seattle, Tacoma
4
Merge onto I 5
24 mi·30 min·I 5
Use the straight / slight right lanes.
5
Keep slight right at fork onto I 5
8.2 mi·10 min·I 5
Use the slight right lane.
6
Take the exit
0.5 mi·1 min
Exit 142AToward WA 18 East: Auburn, Muckleshoot ReservationUse the straight / slight right lanes.
7
Merge onto WA 18
27 mi·34 min·State Route 18
Use the straight / slight right lanes.
8
Continue on WA 18
0.1 mi·8 sec·Snoqualmie Parkway
9
Take the exit
0.6 mi·1 min
Toward I 90 East: Spokane
10
Merge onto I 90
252 mi·4 hr 32 min·I 90
Use the straight / slight right lanes.
11
Merge onto I 90; US 2; US 395
11 mi·14 min·I 90; US 2; US 395
12
Take the exit
0.4 mi·51 sec
Toward WA 27
13
Turn left onto WA 27
148 ft·11 sec·North Pines Road
Use the straight / left lanes.
14
Arrive at destination
WA 27
Trip Plan
To keep your energy levels high during the 6-hour drive, plan for at least one dedicated stop to break up the monotony of the interstate. Since the longest stretch spans over 260 miles, timing your fuel stops strategically is essential to avoid running low between major exits. Leaving early in the morning is your best bet for navigating traffic, especially when transitioning between the major thoroughfares of I-5 and I-90. While the trip is manageable in one day, keep your schedule flexible to account for potential congestion on these high-traffic arteries. Always check your tire pressure and fluid levels before setting out, as the sustained highway speeds will put significant demand on your vehicle.
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 162.8 miles from Lacey, WA, or about 3h 9m into the drive.
The longest continuous stretch on this route runs about 263.1 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 72 miles or 1h 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 162.8 miles or 3h 9m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 2m
Traffic, exits, and arrival timing usually matter more near Spokane Valley, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Lacey, 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 Lacey, WA
This is one driving day of about 325.6 miles and 6h 8m.
Your first comfortable stop window is around 72 miles from Lacey, 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 263.1 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 11
5 decision points cluster between mile 1.3 and 34.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
1.3 mi into trip|~2m in
Take the ramp toward I 5 North: Seattle, Tacoma
Multiple destination signs - pick the right one
Toward I 5 North: Seattle, Tacoma
5
1.5 mi into trip|~3m in|I 5
Merge onto I 5
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
25.5 mi into trip|~33m in|I 5
Keep slight right at fork onto I 5
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
8
33.7 mi into trip|~43m in
Take the exit toward WA 18 East: Auburn, Muckleshoot Reservation
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 142A
Toward WA 18 East: Auburn, Muckleshoot Reservat...
5
34.2 mi into trip|~44m in|WA 18 / State Route 18
Merge onto WA 18 / State Route 18
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
Fuel & Cost
Regular Gas
$63.43 one way
$126.86 round trip
$4.95/gal25.4 MPG avg114 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.18
$66.45
$132.91
premium
$5.39
$69.11
$138.21
diesel
$4.80
$61.48
$122.96
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$63
Meals
$25–$50
Total
$88–$113
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 113.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $34 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
97.7
1
$34.19
$15.63
Efficient EV
81.4
0
$28.49
$13.02
EV Truck/SUV
130.2
1
$45.58
$20.84
Gas CO2
114 kg
EV CO2
38 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 Jul 20, 2026
Origin
Lacey, WA
Late night
in Lacey on Monday
Local time
12:42 AM
PDT
Current temp
54°F
Partly Cloudy
NE 1 to 5 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 19 at 10:36PM PDT until July 22 at 11:00PM PDT by NWS Portland OR
Heat Advisory
Heat Advisory issued July 19 at 9:10PM PDT until July 22 at 11:00PM PDT by NWS Seattle WA
Destination
Spokane Valley, WA
Late night
in Spokane Valley on Monday
Local time
12:42 AM
PDT
Current temp
58°F
Patchy Smoke then Haze
E 2 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 19 at 10:36PM PDT until July 22 at 11:00PM PDT by NWS Portland OR
Heat Advisory
Heat Advisory issued July 19 at 9:10PM PDT until July 22 at 11:00PM PDT by NWS Seattle 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
4 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
6h 8m 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...
19 mi from route
~49 min detour
Free
near mile 44.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a high-speed, interstate-heavy experience, as 99% of this route is comprised of highways. You will primarily navigate via I-5 and State Route 18 before settling onto I-90 for the bulk of your travel. The drive is defined by a massive 263.1-mile uninterrupted stretch on I-90, which dictates the overall pace of your journey. Because the route is so highway-focused, you will find it to be a consistent, fast-moving grind rather than a series of technical or winding local roads. Be prepared for long periods of steady cruising as you traverse the state's major transit corridors.
99% highway — fuel and pacing are the main things to plan.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 263.1 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 5. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.3 miles in.
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 11 significant decision points across 325.6 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 1.3 miles: Multiple destination signs - pick the right one; at 1.5 miles (I 5): Merge point - match speed before joining. Lane positioning matters here; at 25.5 miles (I 5): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Hilly terrain with moderate elevation changes
2,549 ft204 ft
Total Climb
4,472 ft
Total Descent
2,662 ft
Highest Point
2,549 ft
~93 mi in
Elevation Range
2,346 ft
Notable High Points
2,549 ft at ~93 miles+560 ft prominence
2,446 ft at ~162.8 miles+847 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 Lacey, WA to Spokane Valley, WA, road signs begin pointing toward Muckleshoot Reservation along the way.
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 8m. Total distance: 325.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 8m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 263.1 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 23 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 Spokane Valley, 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 23 rest areas along the route for bathroom stops.
The main spots that need attention: at 1.3 miles: Multiple destination signs - pick the right one; at 1.5 miles (I 5): Merge point - match speed before joining. Lane positioning matters here; at 25.5 miles (I 5): Highway fork - watch signs carefully. Lane positioning matters here.
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 12.3 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Spokane Valley, WA before the return drive.
