How far is Saint Helens, OR from Lake Oswego, OR?
The driving distance from Saint Helens, OR to Lake Oswego, OR is about 38 miles (61.1 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 31.3 miles (50.4 km).
- For a round trip, plan for roughly 01h 53m 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 00h 56m.
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.
Unincorporated community in Washington County, Oregon, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Light Rain Likely
Driving Route Map
The map below follows the saved road route between Saint Helens and Lake Oswego.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Helens and Lake Oswego.
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1
Start on South 8th Street
27 m · 9 sec · South 8th Street
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2
Turn left onto Columbia Boulevard
1615 ft · 53 sec · Columbia Boulevard
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3
Continue on Saint Helens Street
2384 ft · 54 sec · Saint Helens Street
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4
At the end of the road, turn left onto Lower Columbia River Highway
7.9 mi · 13 min · Lower Columbia River Highway
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5
Continue on Columbia River Highway
1446 ft · 39 sec · Columbia River Highway
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6
Continue on Lower Columbia River Highway
2.1 mi · 4 min · Lower Columbia River Highway
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7
Continue on Northwest Saint Helens Road
14 mi · 22 min · Northwest Saint Helens Road
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8
Continue on Northwest Yeon Avenue
2.6 mi · 5 min · Northwest Yeon Avenue
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9
Keep slight right to continue on I 405 South, US 26: Beaverton, Salem
2317 ft · 40 sec
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10
Merge slight left onto Stadium Freeway
2.7 mi · 4 min · Stadium Freeway
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11
Merge slight right
2.3 mi · 3 min
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12
Take the exit slight right toward Terwilliger Boulevard
924 ft · 23 sec
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13
Keep slight right to continue on Terwilliger Boulevard, Lewis and Clark College, Veterans Affairs Hospital
108 m · 10 sec
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14
Turn right onto Southwest Barbur Boulevard
114 m · 9 sec · Southwest Barbur Boulevard
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15
Turn right onto Southwest Terwilliger Boulevard
1.6 mi · 4 min · Southwest Terwilliger Boulevard
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16
Enter the roundabout and take exit 1 toward South Terwilliger Boulevard
27 m · 2 sec · South Terwilliger Boulevard
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17
Exit the roundabout onto South Terwilliger Boulevard
1.6 mi · 3 min · South Terwilliger Boulevard
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18
Continue on Southwest Terwilliger Boulevard
1 km · 1 min · Southwest Terwilliger Boulevard
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19
Turn right onto North State Street
1615 ft · 53 sec · North State Street
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20
Turn right onto B Avenue
2111 ft · 1 min · B Avenue
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21
Turn left
80 m · 19 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Saint Helens and Lake Oswego.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Northwest Saint Helens Road
Continue on Northwest Saint Helens Road
14 mi · 00h 22m
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.
Chance Light Rain leaving Saint Helens and Light Rain Likely near Lake Oswego.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Helens to Lake Oswego?
The road trip is about 38 miles (61.1 km) and usually takes 00h 56m 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?
Bethany is a useful midpoint, sitting about 19 miles from Saint Helens and 19 miles from Lake Oswego.
How much longer is the road route than the straight-line distance?
The direct path is about 31.3 miles (50.4 km), while the road route adds roughly 6.7 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 4:36 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.63 one way or $13.27 round trip. Estimated CO2 is about 11.9 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain around Saint Helens and Light Rain Likely near Lake Oswego.
Stop Ideas Near Bethany
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Powell's City of Books
Bureau of Planning and Sustainability
City Hall/SW 5th & Jefferson
Sunrise Park (City Of Tigard park)
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Bethany.
Portland, OR
Union Station
Vancouver station
Manning, Oregon
Flight Path Map
This map shows the direct air route between Saint Helens and Lake Oswego. Straight-line distance: 31.32 mi (50.41 km).
#1 Saint Helens
City in Oregon, USA
| Population | 14,071 |
| Coordinates | 45.8640000, -122.8064900 |
| Altitude | 27 |
| Country | United States |
#2 Lake Oswego
A city in Clackamas County, Oregon.
| Population | 39,821 |
| Coordinates | 45.4206700, -122.6706500 |
| Altitude | 55 |
| Country | United States |
End: (-122.670933, 45.420701)
Estimated Travel Time
Distance: 61 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 15m |
| 40 mph (64.37 km/h) | 00h 56m |
| 50 mph (80.47 km/h) | 00h 45m |
| 60 mph (96.56 km/h) | 00h 37m |
| 70 mph (112.65 km/h) | 00h 32m |
| 80 mph (129 km/h) | 00h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $6.63 | $13.27 |
| Mid-grade | $5.34 | $7.15 | $14.31 |
| Premium | $5.57 | $7.46 | $14.92 |
| Diesel | $6.37 | $8.53 | $17.06 |
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 · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.