How far is Seattle, WA from Portland, OR?
The driving distance from Seattle, WA to Portland, OR is about 173.3 miles (278.9 km), with a travel time of about 03h 26m by car.
- The straight-line flight distance is about 144.8 miles (233.1 km).
- For a round trip, plan for roughly 06h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 26m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in and county seat of Lewis County, Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Seattle and Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Portland.
-
1
Start on the route
9 m · 8 sec
-
2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
-
4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
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5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
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6
Continue straight
3180 ft · 1 min
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7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
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8
Keep slight right to continue on I 5 South: Tacoma, Portland
589 ft · 8 sec
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9
Keep slight left to continue on Airport Way
93 m · 4 sec
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10
Keep slight left to continue on I 5 South: Sea-Tac Airport
30.4 mi · 38 min
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11
Keep slight right
126.2 mi · 2 hr 23 min
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12
Keep slight left
12.9 mi · 17 min
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13
Take the exit slight right toward I 405, US 30 West: Beaverton, Saint Helens
2766 ft · 50 sec
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14
Continue on Stadium Freeway
1.2 mi · 2 min · Stadium Freeway
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15
Take the exit slight right toward Couch Street, Burnside Street
1308 ft · 44 sec
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16
Turn left onto Northwest Couch Street
2736 ft · 2 min · Northwest Couch Street
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17
Turn right
34 m · 8 sec
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18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Seattle and Portland.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 5 South
Keep slight right
126 mi · 02h 23m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Cloudy leaving Seattle and Partly Cloudy near Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Portland?
The road trip is about 173.3 miles (278.9 km) and usually takes 03h 26m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Chehalis is a useful midpoint, sitting about 86.6 miles from Seattle and 86.7 miles from Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 144.8 miles (233.1 km), while the road route adds roughly 28.5 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 10:08 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $32.03 one way or $64.05 round trip. Estimated CO2 is about 54.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Seattle and Partly Cloudy near Portland.
Stop Ideas Near Chehalis
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Chehalis.
Centralia station
Centennial Station
Kelso Multimodal Transportation Center
Tacoma Dome Station
Flight Path Map
This map shows the direct air route between Seattle and Portland. Straight-line distance: 144.83 mi (233.08 km).
#1 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| Country | United States |
#2 Portland
The twenty-sixth most populous city in the United States and the center of the Portland metropolitan area.
| Population | 656,751 |
| Coordinates | 45.5234500, -122.6762100 |
| Altitude | 12 |
| Country | United States |
End: Portland (-122.67621, 45.52345)
Estimated Travel Time
Distance: 279 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 46m |
| 40 mph (64.37 km/h) | 04h 19m |
| 50 mph (80.47 km/h) | 03h 27m |
| 60 mph (96.56 km/h) | 02h 53m |
| 70 mph (112.65 km/h) | 02h 28m |
| 80 mph (129 km/h) | 02h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $32.03 | $64.05 |
| Mid-grade | $5.57 | $34.07 | $68.14 |
| Premium | $5.77 | $35.32 | $70.64 |
| Diesel | $5.47 | $33.46 | $66.92 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Washington · Apr 29, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.