Traveling from Ephrata to Seattle covers 170.7 miles and typically takes about 3 hours and 16 minutes. Since this is a highway-focused drive, you can easily complete the trip in a single day without needing an overnight stay. Expect to spend approximately $36 on fuel for the journey, which primarily utilizes I-90 to navigate from the interior toward the coast. While the route is straightforward, it is best viewed as a functional transit between the two cities rather than a multi-day excursion. Whether you are heading west for business or a change of scenery, this direct path offers a reliable way to reach the coast efficiently.
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
85.3 miles from Ephrata, WA
A natural place for your longest stop of the day
, about 1h 40m into the drive
.
Main Roads
Road
Distance
Duration
I 90
148.8 mi
2h 44m
Basin Street Southwest
20.1 mi
27m
Madison Street
0.1 mi
<1m
3rd Avenue Southwest
<0.1 mi
<1m
Longest stretch:
I 90
— 148.8 mi, about 2h 44m
Turn-by-Turn Driving Directions
Step-by-step road directions between Ephrata, WA and Seattle, WA.
1
Start on 3rd Avenue Southwest
43 ft·6 sec·3rd Avenue Southwest
2
Turn left onto WA 28
20 mi·27 min·Basin Street Southwest
3
Take the ramp
0.3 mi·44 sec
Toward I 90 West: Seattle
4
Merge onto I 90
149 mi·2 hr 44 min·I 90
Use the straight / slight right lanes.
5
Take the exit
0.7 mi·1 min
Exit 2CToward I 5 North: Vancouver British Columbia, James Street, Madison StreetUse the straight / slight right lanes.
6
Keep slight left at fork
0.2 mi·21 sec
Toward I 5 North: Vancouver British Columbia, Madison Street, Convention Center
7
Keep slight right at fork
0.3 mi·54 sec
Toward Madison Street, Convention PlaceUse the slight right lane.
8
Turn left onto Madison Street
0.1 mi·35 sec·Madison Street
Use the left / straight lanes.
9
Turn left
31 ft·2 sec
10
Arrive at destination
Trip Plan
Planning your departure is key to a smooth trip, as the 3-hour and 16-minute duration can be influenced by traffic as you approach the Seattle area. You only need to budget for one stop to keep the drive comfortable, so try to time your break to coincide with the end of your long 148.8-mile stint on I-90. Keep a close watch on your fuel gauge; while $36 is the estimated cost, having a buffer for heavy traffic or unexpected congestion is always a smart move. Because the route is relatively short, you have the flexibility to leave early in the morning or mid-afternoon to avoid peak urban congestion. Prioritize your comfort by planning that single stop early, ensuring you stay refreshed for the final approach into the city.
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 85.3 miles from Ephrata, WA, or about 1h 40m into the drive.
The longest continuous stretch on this route runs about 148.8 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 38 miles or 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 85.3 miles or 1h 40m 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 40m
Traffic, exits, and arrival timing usually matter more near Seattle, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Ephrata, 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 Ephrata, WA
This is one driving day of about 170.7 miles and 3h 16m.
Your first comfortable stop window is around 38 miles from Ephrata, 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 148.8 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 8
5 decision points cluster between mile 20.5 and 170.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
20.5 mi into trip|~28m in|I 90
Merge onto I 90
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
8
169.3 mi into trip|~3h 12m in
Take the exit toward I 5 North: Vancouver British Columbia, James Street, Madison Street
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 2C
Toward I 5 North: Vancouver British Columbia, J...
6
170 mi into trip|~3h 14m in
Keep slight left at fork toward I 5 North: Vancouver British Columbia, Madison Street, Convention Center
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 5 North: Vancouver British Columbia, M...
8
170.2 mi into trip|~3h 14m in
Keep slight right at fork toward Madison Street, Convention Place
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward Madison Street, Convention Place
6
170.5 mi into trip|~3h 15m in|Madison Street
Turn left onto Madison Street
Lane positioning matters here
Use the left / straight lanes.
Fuel & Cost
Regular Gas
$35.73 one way
$71.45 round trip
$5.32/gal25.4 MPG avg60 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$37.47
$74.93
premium
$5.77
$38.76
$77.53
diesel
$5.61
$37.69
$75.38
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$36
Meals
$25–$50
Total
$61–$86
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 59.7 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $18 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
51.2
0
$17.92
$8.19
Efficient EV
42.7
0
$14.94
$6.83
EV Truck/SUV
68.3
0
$23.90
$10.92
Gas CO2
60 kg
EV CO2
20 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 20, 2026
Origin
Ephrata, WA
Late night
in Ephrata on Tuesday
Local time
1:10 AM
PDT
Current temp
67°F
Unavailable
Live forecast
Destination
Seattle, WA
Late night
in Seattle on Tuesday
Local time
1:10 AM
PDT
Current temp
65°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 cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 16m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
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...
0 mi from route
~1 min detour
Free
near mile 170.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
With 87% of the journey spent on highways, this route is dominated by a consistent interstate experience. The centerpiece of your drive is the 148.8-mile stretch on I-90, which provides the bulk of the mileage and dictates the pace of your travel. You will start on local roads like Basin Street Southwest and Madison Street before transitioning onto the main highway system. Expect a steady, high-speed flow that allows you to cover distance quickly. Transitioning from the regional interior onto a major interstate artery, you will find the driving environment shifts from local transit to a focused, long-haul highway rhythm.
87% highway — fuel and pacing are the main things to plan.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 148.8 mi on I 90.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 90 and Basin Street Southwest. You will hit about 8 points where you need to pay attention to lane position or signs. The trickiest moment comes around 20.5 miles in near I 90.
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 170.7 miles you will encounter 8 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 20.5 miles (I 90): Merge point - match speed before joining. Lane positioning matters here; at 169.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 170 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
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 3h 16m. Total distance: 170.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 16m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (87%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 148.8 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 20.5 miles (I 90): Merge point - match speed before joining. Lane positioning matters here; at 169.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 170 miles: 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.
Possible but tiring. At 3.3 hours each way, an in-and-out day trip would put you behind the wheel for 6.5 hours — manageable with a long break at Seattle, WA, but most travelers stay overnight.
