This 145.5-mile journey from Seattle to Sunnyslope, Washington, is a manageable 1-day trip, estimated to take around 2 hours and 56 minutes. You'll be navigating a mix of main roads including Mount Baker Ridge Tunnel, US 97, and US 2, with 42% of the drive on highways. The estimated fuel cost for this route is approximately $30. It's a practical drive that offers a good balance for a single-day excursion, allowing you to reach your destination without needing an overnight stop. The route offers a mixed driving experience as you travel within the Pacific Coast region.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
72.8 miles from Seattle, WA
A natural place for your longest stop of the day
, about 1h 24m into the drive
.
Main Roads
Road
Distance
Duration
Mount Baker Ridge Tunnel
82.2 mi
1h 33m
US 97
35.2 mi
44m
US 2
14.8 mi
19m
WA 970
9.9 mi
12m
I 90
1 mi
1m
I 5
0.6 mi
1m
Sunset Highway
0.4 mi
<1m
Easy Street
0.3 mi
<1m
Longest stretch:
Mount Baker Ridge Tunnel
— 82.2 mi, about 1h 33m
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle, WA and Sunnyslope, 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
82 mi·1 hr 33 min·Mount Baker Ridge Tunnel
Use the straight / slight right lanes.
11
Take the exit
0.2 mi·32 sec
Toward Cle Elum, Leavenworth
12
Turn left onto WA 970
0.4 mi·33 sec·Sunset Highway
13
At end of road, turn right onto WA 970
0.1 mi·10 sec·WA 970
14
Take the exit onto WA 970
9.8 mi·12 min·WA 970
15
Continue on US 97
35 mi·44 min·US 97
16
Take the exit onto US 97
15 mi·19 min·US 2
17
Enter roundabout onto Easy Street
225 ft·9 sec·Easy Street
18
Continue on Easy Street
0.2 mi·33 sec·Easy Street
19
Arrive at destination
Easy Street
Trip Plan
For this 1-day, 145.5-mile trip, flexibility is your advantage. Consider an early start to make the most of your day and avoid potential traffic, especially if you're departing from the Seattle area. With a total duration of under 3 hours, you'll only need one planned stop. Keep an eye on your fuel gauge, as the estimated cost is $30, and plan your refueling accordingly, especially before the longest stretch of 82.2 miles on Mount Baker Ridge Tunnel, to ensure a smooth journey.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 72.8 miles from Seattle, WA, or about 1h 24m into the drive.
The longest continuous stretch on this route runs about 82.2 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 32 miles or 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 72.8 miles or 1h 24m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 22m
Traffic, exits, and arrival timing usually matter more near Sunnyslope, 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 145.5 miles and 2h 56m.
Your first comfortable stop window is around 32 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 82.2 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 15
5 decision points cluster between mile 0 and 2.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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.
Fuel & Cost
Regular Gas
$30.45 one way
$60.90 round trip
$5.32/gal25.4 MPG avg51 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$31.94
$63.87
premium
$5.77
$33.04
$66.08
diesel
$5.61
$32.12
$64.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$30
Meals
$25–$50
Total
$55–$80
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 50.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $15 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
43.7
0
$15.28
$6.98
Efficient EV
36.4
0
$12.73
$5.82
EV Truck/SUV
58.2
0
$20.37
$9.31
Gas CO2
51 kg
EV CO2
17 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 19, 2026
Origin
Seattle, WA
Late night
in Seattle on Sunday
Local time
4:40 AM
PDT
Current temp
48°F
Partly Cloudy
N 3 mph3% chanceLive forecast
Destination
Sunnyslope, WA
Late night
in Sunnyslope on Sunday
Local time
4:40 AM
PDT
Current temp
43°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
2h 56m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
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?
The character of this drive is best described as a mixed experience, offering variety for the driver. With 42% of the route on highways, you'll encounter faster-paced sections, interspersed with other road types. The longest uninterrupted stretch you'll encounter is a significant 82.2 miles on Mount Baker Ridge Tunnel, providing a sustained period of driving. This variation means you won't be stuck in a monotonous Interstate grind, but rather experience a dynamic drive that changes as you progress through the landscape.
42% highway, the rest on surface roads — varied driving throughout.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 82.2 mi on Mount Baker Ridge Tunnel.
How Hard Is This Drive?
7/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Madison Street.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 15 significant decision points across 145.5 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: 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.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Seattle, WA and Sunnyslope, WA, road signs point toward Cle Elum and Leavenworth.
Seattle, Washington sits at one of the most beautiful spots in the United States. Occupying a narrow isthmus between the Puget Sound and Lake Washington, it is the biggest city in the Pacific Northwest, with 780,000 people in Seattle and over four million people in the metro area. Seen from above, carpets of evergreen trees, pristine blue waters, and snowy white mountains surround the downtown's metallic skyscrapers, earning the city its nickname The Emerald City.
On the ground, you will find a vibrant and cosmopolitan city. Next to the progressive downtown and the freewheeling feel of Capitol Hill, you can find a laid-back atmosphere in the districts to the north and ethnically diverse neighborhoods to the south.
Doable as a same-day drive at 2h 56m. Total distance: 145.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 56m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (42%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 82.2 miles on Mount Baker Ridge Tunnel. The full list of main roads is in the Roads section above.
Yes — we found about 4 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 Sunnyslope, 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 4 rest areas along the route for bathroom stops.
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.
Yes — Klondike Gold Rush - Seattle Unit National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Sunnyslope, WA before heading back.
