Trip.ovh Logo
Trip.ovh

Trip from Cosmopolis, WA to Spokane Valley, WA

Drive Time

7h 20m

Distance

378.5 mi

609 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$79

one way

EV Charging

Excellent

33 DC fast

Best Time to Leave

Save up to 31 min
4 AM
7h 10m ★
6 AM
7h 20m
8 AM
7h 41m
10 AM
7h 27m
12 PM
7h 25m
3 PM
7h 29m
5 PM
7h 40m
8 PM
7h 14m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
Google Maps Waze Apple Maps
Download GPX
Downtown Cosmopolis, WA, WA

Cosmopolis, WA

Boris Hamer

Trip Overview

The drive from Cosmopolis, WA to Spokane Valley, WA covers 378.5 miles and takes about 7h 20m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 90, I 5, State Route 18 for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 263.1 miles on I 90. At current regular gas prices, budget about $79.44 one way before food or hotel costs.

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

2 planned breaks

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

189.2 miles from Cosmopolis, WA

A natural place for your longest stop of the day , about 3h 52m into the drive .

Drive Character

This is a 7h 20m highway drive covering 378.5 miles, with most of the trip on I 90 and I 5. The longest continuous stretch is about 263.1 miles on I 90.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 21 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 90 is the longest continuous segment at about 263.1 miles.

How Hard Is This Drive?

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 0.1 miles in near US 101 / 1st Street.

Route Complexity 9/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 16 significant decision points across 378.5 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 0.1 miles (US 101 / 1st Street): Lane positioning matters here; at 4.2 miles (WA 107 / State Route 107): Lane positioning matters here; at 49.5 miles (I 5): Merge point - match speed before joining. Lane positioning matters here.

Critical Maneuvers

5 of 16 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

6
0.1 mi into trip | ~0m in | US 101 / 1st Street

Turn right onto US 101 / 1st Street

Lane positioning matters here

Use the left lane.
6
4.2 mi into trip | ~7m in | WA 107 / State Route 107

Turn left onto WA 107 / State Route 107

Lane positioning matters here

Use the left lane.
5
49.5 mi into trip | ~1h 8m in | I 5

Merge onto I 5

Merge point - match speed before joining. Lane positioning matters here

Use the straight / slight right lanes.
6
78.3 mi into trip | ~1h 44m 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
86.5 mi into trip | ~1h 55m 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...

Towns Along This Route

On the drive from Cosmopolis, WA to Spokane Valley, WA, road signs begin pointing toward Muckleshoot Reservation along the way.

Muckleshoot Reservation

86.5 mi in | ~1h 55m

Main Roads

Road Distance Duration
I 90 263.1 mi 4h 46m
I 5 37 mi 46m
State Route 18 27.3 mi 34m
WA 8 21.1 mi 26m
Olympic Highway 10.1 mi 12m
State Route 107 7 mi 12m
US 101 5.4 mi 7m
1st Street 4.1 mi 6m
Longest stretch: I 90 — 263.1 mi, about 4h 46m

Turn-by-Turn Driving Directions

Step-by-step road directions between Cosmopolis, WA and Spokane Valley, WA.

1

Start on 3rd Street

21 ft · 2 sec · 3rd Street
2

Turn right onto F Street

0.1 mi · 27 sec · F Street
3

Turn right onto US 101

4.1 mi · 6 min · 1st Street
Use the left lane.
4

Turn left onto WA 107

7.0 mi · 12 min · State Route 107
Use the left lane.
5

Continue on WA 107

0.8 mi · 1 min · South Main Street
6

Take the ramp

0.4 mi · 52 sec
7

Merge onto US 12

10 mi · 12 min · Olympic Highway
8

Continue on WA 8

21 mi · 26 min · WA 8
9

Merge onto US 101

5.4 mi · 7 min · US 101
10

Keep slight left at fork

0.5 mi · 52 sec
11

Merge onto I 5

29 mi · 36 min · I 5
Use the straight / slight right lanes.
12

Keep slight right at fork onto I 5

8.2 mi · 10 min · I 5
Use the slight right lane.
13

Take the exit

0.5 mi · 1 min
Exit 142A Toward WA 18 East: Auburn, Muckleshoot Reservation Use the straight / slight right lanes.
14

Merge onto WA 18

27 mi · 34 min · State Route 18
Use the straight / slight right lanes.
15

Continue on WA 18

0.1 mi · 8 sec · Snoqualmie Parkway
16

Take the exit

0.6 mi · 1 min
Toward I 90 East: Spokane
17

Merge onto I 90

252 mi · 4 hr 32 min · I 90
Use the straight / slight right lanes.
18

Merge onto I 90; US 2; US 395

11 mi · 14 min · I 90; US 2; US 395
19

Take the exit

0.4 mi · 51 sec
Toward WA 27
20

Turn left onto WA 27

148 ft · 11 sec · North Pines Road
Use the straight / left lanes.
21

Arrive at destination

WA 27

Trip Plan

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 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 189.2 miles from Cosmopolis, WA, or about 3h 52m 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 83 miles or 1h 50m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 189.2 miles or 3h 52m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 6h 12m

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 Cosmopolis, 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.

+

Pick one backup stop option before the midpoint in case traffic changes your pacing.

Day 1

Settle into the route from Cosmopolis, WA

This is one driving day of about 378.5 miles and 7h 20m.

Your first comfortable stop window is around 83 miles from Cosmopolis, WA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks 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.

Halfway Point

Midpoint

About 189.2 mi from Cosmopolis, WA · 3h 52m into the drive

Downtown Redmond, WA, WA

Mid-route town

Meal stop

Redmond, WA

189 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Federal Way, WA

Fuel and coffee

A short stop after about 83 miles helps settle the day before fatigue starts building.

Monroe, WA

Meal break

The midpoint is around 189.2 miles from Cosmopolis, WA, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before I 90 if your tank is already low. That segment runs about 263.1 miles.

Arriving in Spokane Valley, WA

The final approach into Spokane Valley, WA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Spokane Valley, WA.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

Klondike Gold Rush - Seattle Unit National Historical Park

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 ~48 min detour Free near mile 104.4
View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$79.44 one way

$158.88 round trip

$5.33/gal 25.4 MPG avg 132 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $5.57 $82.96 $165.91
premium $5.77 $86.00 $171.99
diesel $5.64 $84.09 $168.18

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$79

Meals

$25–$50

Total

$104–$129

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 132.4 kg one way. Prices: EIA weekly data, 2026-04-06.

EV Charging Along Route

33 DC fast chargers · Coverage: excellent

Kingswood Drive - Tesla Supercharger

Tumwater, WA

Tesla

20 DCFC

Target - Tesla Supercharger

Lacey, WA

Tesla

12 DCFC

Aberdeen, WA - Tesla Supercharger

Aberdeen, WA

Tesla

8 DCFC

Pilot Travel Center - Tesla Supercharger

Tumwater, WA

Tesla

8 DCFC

Aberdeen, WA

Aberdeen, WA

RIVIAN_ADVENTURE

6 DCFC

Mullinax Ford of Olympia

Olympia, WA

SYNERGEV

6 DCFC

Fred Meyer 186 (Lacey, WA)

Lacey, WA

Electrify America

6 DCFC

Walmart 3531 (Lacey, WA)

Lacey, WA

Electrify America

6 DCFC

ChargePoint Network: 13 Electrify America: 5 Tesla: 4 RED_E: 2 Non-Networked: 2 RIVIAN_ADVENTURE: 1 Blink Network: 1 SYNERGEV: 1 EVCS: 1 7CHARGE: 1 EV Connect: 1 BP_PULSE: 1

Station data from NREL Alternative Fuel Stations database.

Driving Electric?

About $40 in charging · 1 stop · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 113.6 1 $39.74 $18.17
Efficient EV 94.6 1 $33.12 $15.14
EV Truck/SUV 151.4 1 $52.99 $24.22

Gas CO2

132 kg

EV CO2

44 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 data refreshed 3 days ago

Origin

Cosmopolis, WA

Morning in Cosmopolis on Monday

Local time

9:44 AM

PDT

Current temp

38°F

Unavailable

Live forecast

Destination

Spokane Valley, WA

Morning in Spokane Valley on Monday

Local time

9:44 AM

PDT

Current temp

33°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

7h 20m 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.

Frequently Asked Questions

The drive from Cosmopolis, WA to Spokane Valley, WA covers 378.5 miles and takes about 7h 20m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, I 5, State Route 18. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 189.2 miles from Cosmopolis, WA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $79.44 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 16 significant decision points across 378.5 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.
The main spots that need attention: at 0.1 miles (US 101 / 1st Street): Lane positioning matters here; at 4.2 miles (WA 107 / State Route 107): Lane positioning matters here; at 49.5 miles (I 5): Merge point - match speed before joining. Lane positioning matters here.
On the drive from Cosmopolis, WA to Spokane Valley, WA, road signs begin pointing toward Muckleshoot Reservation along the way.

Was this route helpful?

Thanks for your feedback!

Your tip has been submitted. Thanks!

/500

Explore More

Return Trip

Spokane Valley, WA to Cosmopolis, WA

Plan the drive back the other way.

378.9 mi 7h 20m

Continue From Spokane Valley, WA

Sumas, WA 393.1 mi · 7h 33m Blaine, WA 392.5 mi · 7h 21m Yacolt, WA 384.1 mi · 7h 21m Woodland, WA 381.8 mi · 7h 9m

More from Cosmopolis, WA

Spokane, WA 369.9 mi · 7h 11m Everett, WA 136.8 mi · 2h 26m Vancouver, WA 133.2 mi · 2h 22m Bellevue, WA 111.3 mi · 2h 1m Seattle, WA 108.7 mi · 1h 57m Renton, WA 100.9 mi · 1h 50m

More trips to Spokane Valley, WA

Forks, WA 461.3 mi Long Beach, WA 439 mi Ilwaco, WA 437.9 mi Ocean Shores, WA 402.3 mi Westport, WA 397.4 mi Sumas, WA 392.8 mi

Explore more options from Cosmopolis, WA or browse trips ending in Spokane Valley, WA.

Looking for more statewide routes? Browse WA road trips.

Explore maps for Cosmopolis, WA or Spokane Valley, WA on MapSof.net.