West Lake Sammamish, WA to Kennewick, WA is 214.4 miles and takes about 4h 1m via I 90 and I 82, with a fuel budget near $45 and enough daylight to finish in a day. This trip takes you across Washington State, transitioning from the Pacific Coast region to a drier, inland environment. It's a straightforward, highway-focused journey primarily on major interstates, making it a convenient option for a single-day drive. Expect a consistent pace as you cover the 214.4 miles with minimal complications.
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
107.2 miles from West Lake Sammamish, WA
A natural place for your longest stop of the day
, about 2h into the drive
.
Main Roads
Road
Distance
Duration
I 90
96.6 mi
1h 46m
I 82
64.1 mi
1h 8m
US 97
37.8 mi
42m
WA 240
7.3 mi
9m
US 12
5.5 mi
5m
West Columbia Drive
0.7 mi
1m
West Lake Sammamish Parkway Southeast
0.6 mi
1m
North Fruitland Street
0.6 mi
1m
Longest stretch:
I 90
— 96.6 mi, about 1h 46m
Turn-by-Turn Driving Directions
Step-by-step road directions between West Lake Sammamish, WA and Kennewick, WA.
1
Start on Southeast 40th Place
280 ft·13 sec·Southeast 40th Place
2
Turn right
454 ft·35 sec
3
Turn left onto West Lake Sammamish Parkway Southeast
0.3 mi·42 sec·West Lake Sammamish Parkway Southeast
4
Enter roundabout onto West Lake Sammamish Parkway Southeast
93 ft·2 sec·West Lake Sammamish Parkway Southeast
5
Continue on West Lake Sammamish Parkway Southeast
239 ft·7 sec·West Lake Sammamish Parkway Southeast
6
Continue on West Lake Sammamish Parkway Southeast
0.3 mi·47 sec·West Lake Sammamish Parkway Southeast
7
Turn left onto Southeast Newport Way
398 ft·14 sec·Southeast Newport Way
Use the left / straight lanes.
8
Take the ramp
0.3 mi·44 sec
Toward I 90 East: Issaquah, SpokaneUse the left lane.
9
Merge onto I 90
97 mi·1 hr 46 min·I 90
Use the straight / slight right lanes.
10
Take the exit onto US 97
38 mi·42 min·US 97
Toward I 82 East, US 97 South: YakimaUse the straight / slight right lanes.
11
Keep slight left at fork onto I 82; US 12
64 mi·1 hr 8 min·I 82; US 12
12
Take the exit onto US 12
5.5 mi·5 min·US 12
Exit 102Toward I‑182 east, US 12 east: Richland, Pasco
13
Take the exit onto WA 240
7.3 mi·9 min·WA 240
Toward SR 240 east: KennewickUse the straight / slight right lanes.
14
Enter roundabout onto West Columbia Drive
0.1 mi·9 sec·West Columbia Drive
15
Continue on West Columbia Drive
0.5 mi·1 min·West Columbia Drive
16
Turn right onto North Fruitland Street
0.6 mi·1 min·North Fruitland Street
17
Turn right onto West Kennewick Avenue
0.5 mi·1 min·West Kennewick Avenue
18
Turn right onto North Newport Street
0.1 mi·31 sec·North Newport Street
19
Arrive at destination
North Newport Street
Trip Plan
Given the relatively short 4h 1m duration, this route is best tackled in a single day, offering flexibility in your departure time. Aiming to leave in the morning will give you plenty of daylight to complete the 214.4 miles. With only one recommended stop, consider planning your fuel and break points in advance, especially during the 96.6-mile stretch on I 90 where services might be less frequent. Keep an eye on your fuel gauge as you approach the midpoint of this longer segment.
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 107.2 miles from West Lake Sammamish, WA, or about 2h into the drive.
The longest continuous stretch on this route runs about 96.6 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 47 miles or 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 107.2 miles or 2h in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 16m
Traffic, exits, and arrival timing usually matter more near Kennewick, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving West Lake Sammamish, 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 West Lake Sammamish, WA
This is one driving day of about 214.4 miles and 4h 1m.
Your first comfortable stop window is around 47 miles from West Lake Sammamish, 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 96.6 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 14
5 decision points cluster between mile 0.7 and 205.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.7 mi into trip|~2m in|Southeast Newport Way
Turn left onto Southeast Newport Way
Lane positioning matters here
Use the left / straight lanes.
7
0.8 mi into trip|~2m in
Take the ramp toward I 90 East: Issaquah, Spokane
Lane positioning matters here. Multiple destination signs - pick the right one
Use the left lane.
Toward I 90 East: Issaquah, Spokane
7
97.7 mi into trip|~1h 50m in|US 97
Take the exit onto US 97 toward I 82 East, US 97 South: Yakima
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 I 82 East, US 97 South: Yakima
6
199.7 mi into trip|~3h 41m 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. Multiple destination signs - pick the right one
Exit 102
Toward I‑182 east, US 12 east: Richland, Pasco
6
205.2 mi into trip|~3h 47m in|WA 240
Take the exit onto WA 240 toward SR 240 east: Kennewick
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Toward SR 240 east: Kennewick
Fuel & Cost
Regular Gas
$44.87 one way
$89.74 round trip
$5.32/gal25.4 MPG avg75 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$47.06
$94.12
premium
$5.77
$48.69
$97.37
diesel
$5.61
$47.34
$94.67
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$45
Meals
$25–$50
Total
$70–$95
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 75 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $23 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
64.3
0
$22.51
$10.29
Efficient EV
53.6
0
$18.76
$8.58
EV Truck/SUV
85.8
1
$30.02
$13.72
Gas CO2
75 kg
EV CO2
25 kg (67% 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 15, 2026
Origin
West Lake Sammamish, WA
Late night
in West Lake Sammamish on Sunday
Local time
5:12 AM
PDT
Current temp
63°F
Unavailable
Live forecast
Destination
Kennewick, WA
Late night
in Kennewick on Sunday
Local time
5:12 AM
PDT
Current temp
51°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
12 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
4h 1m 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...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is almost entirely on highways, with a 99% highway share, meaning you'll be on major roads for the vast majority of the 214.4 miles. The longest uninterrupted stretch is 96.6 miles on I 90, so be prepared for extended periods of consistent speed and limited opportunities for spontaneous stops. The route is designed for efficiency, taking you through a progression of Washington's landscapes as you head eastward.
99% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 96.6 mi on I 90.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 90 and I 82. You will hit about 14 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.7 miles in near Southeast Newport Way.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 214.4 miles you will encounter 14 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.7 miles (Southeast Newport Way): Lane positioning matters here; at 0.8 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 97.7 miles (US 97): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between West Lake Sammamish, WA and Kennewick, WA, road signs point toward I‑182 East and Pasco.
I‑182 East
199.7 mi in|~3h 41m|via US 12
Pasco
199.7 mi in|~3h 41m|via US 12
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 1m. Total distance: 214.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 1m 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 96.6 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.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 0.7 miles (Southeast Newport Way): Lane positioning matters here; at 0.8 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 97.7 miles (US 97): 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.
Possible but tiring. At 4.0 hours each way, an in-and-out day trip would put you behind the wheel for 8.0 hours — manageable with a long break at Kennewick, WA, but most travelers stay overnight.
