How far is Lake Oswego, OR from Seaside, OR?
The driving distance from Lake Oswego, OR to Seaside, OR is about 84.6 miles (136.1 km), with a travel time of about 01h 57m by car.
- The straight-line flight distance is about 72.2 miles (116.2 km).
- For a round trip, plan for roughly 03h 55m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 57m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Oregon, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Lake Oswego and Seaside.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lake Oswego and Seaside.
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1
Start on the route
65 m · 18 sec
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2
Turn right onto A Avenue
1156 ft · 35 sec · A Avenue
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3
Continue on Country Club Road
1178 ft · 27 sec · Country Club Road
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4
Continue on Country Club Road
1.5 mi · 3 min · Country Club Road
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5
Turn left onto Boones Ferry Road
1.2 km · 1 min · Boones Ferry Road
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6
Turn right onto Kruse Way
1.5 mi · 3 min · Kruse Way
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7
Continue on Beaverton-Tigard Freeway
7.2 mi · 10 min · Beaverton-Tigard Freeway
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8
Take the exit slight left toward US 26 West
1.5 km · 2 min
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9
Merge slight left onto Northwest Sunset Highway
33.2 mi · 46 min · Northwest Sunset Highway
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10
Continue on Sunset Highway
34.7 mi · 44 min · Sunset Highway
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11
Take the exit slight right toward US 101 North: Seaside, Astoria
1717 ft · 26 sec
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12
Merge slight left onto Oregon Coast Highway
905 ft · 14 sec · Oregon Coast Highway
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13
Continue on South Roosevelt Drive
3.8 mi · 7 min · South Roosevelt Drive
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14
Turn left onto Broadway Street
157 m · 10 sec · Broadway Street
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15
Arrive at your destination
0 m · 1 sec · Broadway Street
Car Route Details
A richer read on the saved driving route between Lake Oswego and Seaside.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Sunset Highway
Continue on Sunset Highway
34.7 mi · 00h 44m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Cloudy leaving Lake Oswego and Mostly Cloudy near Seaside.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lake Oswego to Seaside?
The road trip is about 84.6 miles (136.1 km) and usually takes 01h 57m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Vernonia is a useful midpoint, sitting about 42.2 miles from Lake Oswego and 42.4 miles from Seaside.
How much longer is the road route than the straight-line distance?
The direct path is about 72.2 miles (116.2 km), while the road route adds roughly 12.4 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 2:34 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.80 one way or $29.61 round trip. Estimated CO2 is about 26.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Lake Oswego and Mostly Cloudy near Seaside.
Stop Ideas Near Vernonia
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 Vernonia.
Manning, Oregon
Elsie, Oregon
Kelso Multimodal Transportation Center
Necanicum Junction, Oregon
Flight Path Map
This map shows the direct air route between Lake Oswego and Seaside. Straight-line distance: 72.2 mi (116.2 km).
#1 Lake Oswego
A city in Clackamas County, Oregon.
| Population | 39,821 |
| Coordinates | 45.4206700, -122.6706500 |
| Altitude | 55 |
| Country | United States |
#2 Seaside
City in Oregon, USA
| Population | 6,926 |
| Coordinates | 45.9931600, -123.9226400 |
| Altitude | 2 |
| Country | United States |
End: Seaside (-123.92264, 45.99316)
Estimated Travel Time
Distance: 136 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 49m |
| 40 mph (64.37 km/h) | 02h 06m |
| 50 mph (80.47 km/h) | 01h 41m |
| 60 mph (96.56 km/h) | 01h 24m |
| 70 mph (112.65 km/h) | 01h 12m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $14.80 | $29.61 |
| Mid-grade | $5.34 | $15.96 | $31.92 |
| Premium | $5.57 | $16.64 | $33.28 |
| Diesel | $6.37 | $19.03 | $38.07 |
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 Oregon · May 06, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.