The drive from Seattle, WA to Coulee Dam, WA covers 231 miles and takes about 4h 41m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Mount Baker Ridge Tunnel, Coulee Boulevard, WA 17 for much of the mileage,
and the overall profile is turn-heavy local drive.
The longest uninterrupted segment is about 147.9 miles on Mount Baker Ridge Tunnel.
At current regular gas prices, budget about $48.35 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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
115.5 miles from Seattle, WA
A natural place for your longest stop of the day
, about 2h 9m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 41m. Total distance: 231 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 41m drive, comfortable solo distance.
Scenic Drive
Turn-heavy local drive route profile with national parks nearby.
Drive Character
Expect a 4h 41m drive with frequent turns across 231 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 28 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Mount Baker Ridge Tunnel is the longest continuous segment at about 147.9 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. You will hit about 15 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near Madison Street.
Driving Effort6/10
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 231 miles you will encounter 15 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: near the start (Madison Street): Navigation decision point; at 0.1 miles (Spring Street): Lane positioning matters here; at 1 miles (I 5): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 15 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
0 mi into trip|~0m in|Madison Street
Turn left onto Madison Street
Navigation decision point
7
0.1 mi into trip|~0m in|Spring Street
Turn right onto Spring Street
Lane positioning matters here
Use the right lane.
6
1 mi into trip|~2m in|I 5
Keep slight left at fork onto I 5 toward I 90 East, I 5 South: Bellevue, Portland
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 90 East, I 5 South: Bellevue, Portland
6
1.1 mi into trip|~2m in
Keep slight left at fork toward I 90 East: Bellevue, Spokane
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 90 East: Bellevue, Spokane
6
2.5 mi into trip|~4m in|I 90 / Mount Baker Ridge Tunnel
Keep slight left at fork onto I 90 / Mount Baker Ridge Tunnel
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
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 Seattle, WA to Coulee Dam, WA, road signs begin pointing toward Soap Lake along the way.
Soap Lake
150.4 mi in|~2h 48m
Main Roads
Road
Distance
Duration
Mount Baker Ridge Tunnel
147.9 mi
2h 43m
Coulee Boulevard
25.1 mi
32m
WA 17
21.3 mi
29m
WA 283
20 mi
26m
Coulee Corridor / Sunset Highway
4.3 mi
6m
WA 28
3.7 mi
5m
Coulee Corridor
1.7 mi
3m
Alder Street Northwest
1.6 mi
2m
Longest stretch:
Mount Baker Ridge Tunnel
— 147.9 mi, about 2h 43m
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle, WA and Coulee Dam, WA.
1
Start on this road
31 ft·7 sec·this road
2
Turn left onto Madison Street
204 ft·11 sec·Madison Street
3
Turn right onto 4th Avenue
308 ft·14 sec·4th Avenue
4
Turn right onto Spring Street
0.1 mi·26 sec·Spring Street
Use the right lane.
5
Take the ramp
0.2 mi·28 sec
Toward I 5 South: Portland
6
Continue on I 5
0.6 mi·1 min·I 5
Use the left lane.
7
Keep slight left at fork onto I 5
147 ft·2 sec·I 5
Toward I 90 East, I 5 South: Bellevue, Portland
8
Keep slight left at fork
0.4 mi·54 sec
Toward I 90 East: Bellevue, Spokane
9
Merge onto I 90
1.0 mi·1 min·I 90
Use the straight / slight right lanes.
10
Keep slight left at fork onto I 90
148 mi·2 hr 43 min·Mount Baker Ridge Tunnel
Use the straight / slight right lanes.
11
Take the exit
0.5 mi·1 min
Toward WA 283 North: Ephrata, Soap Lake
12
Continue on WA 281 Spur
0.1 mi·9 sec·Burke Spur
13
Turn right onto WA 283
20 mi·26 min·WA 283
14
Turn right onto 5th Avenue Southwest
392 ft·14 sec·5th Avenue Southwest
15
Turn left onto Alder Street Southwest
0.4 mi·55 sec·Alder Street Southwest
16
Continue on Alder Street Northwest
1.6 mi·2 min·Alder Street Northwest
17
Turn right onto WA 28
3.7 mi·5 min·WA 28
18
Turn left onto WA 17
21 mi·29 min·WA 17
19
At end of road, turn right onto US 2
4.3 mi·6 min·Coulee Corridor / Sunset Highway
20
Continue on WA 155
25 mi·32 min·Coulee Boulevard
21
Continue on WA 155
0.5 mi·56 sec·Grand Coulee Avenue
22
Continue on WA 155
0.5 mi·1 min·Midway Avenue
23
Continue on WA 155
1.7 mi·3 min·Coulee Corridor
24
Continue on WA 155
0.2 mi·25 sec·State Route 155
25
Continue on WA 155
0.2 mi·35 sec·Columbia Avenue
26
Turn right onto WA 155
0.2 mi·21 sec·State Highway 155
27
Continue on Roosevelt Way
0.2 mi·23 sec·Roosevelt Way
28
Arrive at destination
Marina Way
Trip Plan
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 115.5 miles from Seattle, WA, or about 2h 9m into the drive.
The longest continuous stretch on this route runs about 147.9 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 51 miles or 58m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 115.5 miles or 2h 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 3h 43m
Traffic, exits, and arrival timing usually matter more near Coulee Dam, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Seattle, 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 Seattle, WA
This is one driving day of about 231 miles and 4h 41m.
Your first comfortable stop window is around 51 miles from Seattle, 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 Mount Baker Ridge Tunnel for about 147.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 115.5 mi from Seattle, WA
· 2h 9m into the drive
Place data sourced from public business listings. Hours and availability may vary.
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.
Fuel & Cost
Regular Gas
$48.35 one way
$96.69 round trip
$5.32/gal25.4 MPG avg81 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$50.70
$101.40
premium
$5.77
$52.46
$104.91
diesel
$5.61
$51.00
$102.00
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$48
Meals
$25–$50
Total
$73–$98
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 80.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
6 DC fast chargers
· Coverage: good
Tesla Supercharger
George, Washington
Tesla
1 DCFC
Tesla Supercharger
Cle Elum, Washington
Tesla
1 DCFC
Tesla Supercharger
North Bend, Washington
Tesla
1 DCFC
Tesla Supercharger
Cle Elum, Washington
Tesla
1 DCFC
EVCS Charging Station
Snoqualmie Pass, Washington
EVCS
1 DCFC
EVCS Charging Station
Cle Elum, Washington
EVCS
1 DCFC
Tesla: 4
EVCS: 2
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $24 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
69.3
0
$24.26
$11.09
Efficient EV
57.8
0
$20.21
$9.24
EV Truck/SUV
92.4
1
$32.34
$14.78
Gas CO2
81 kg
EV CO2
27 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Seattle, WA
Morning
in Seattle on Saturday
Local time
7:02 AM
PDT
Current temp
49°F
Unavailable
Live forecast
Destination
Coulee Dam, WA
Morning
in Coulee Dam on Saturday
Local time
7:02 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
2 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
4h 41m 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.
Frequently Asked Questions
The drive from Seattle, WA to Coulee Dam, WA covers 231 miles and takes about 4h 41m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Mount Baker Ridge Tunnel, Coulee Boulevard, WA 17. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 115.5 miles from Seattle, WA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $48.35 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This drive requires moderate attention. Across 231 miles you will encounter 15 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: near the start (Madison Street): Navigation decision point; at 0.1 miles (Spring Street): Lane positioning matters here; at 1 miles (I 5): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
On the drive from Seattle, WA to Coulee Dam, WA, road signs begin pointing toward Soap Lake along the way.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
