Origin
Lake Oswego, OR
Afternoon in Lake Oswego on Saturday
Local time
1:19 PM
PDT
Current temp
60°F
Unavailable
Live forecast
Trip from Lake Oswego, OR to Saint Helens, OR
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
1h 4m
Distance
37.7 mi
61 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$8
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 59m
★
6 AM
1h 4m
8 AM
1h 14m
10 AM
1h 8m
12 PM
1h 7m
3 PM
1h 8m
5 PM
1h 14m
8 PM
1h 1m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Lake Oswego, OR
Wikimedia Commons
Saint Helens, OR
JL Howarth
Trip Overview
The drive from Lake Oswego, OR to Saint Helens, OR covers 37.7 miles and takes about 1h 4m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on US 30, Stadium Freeway, Terwilliger Curves for much of the mileage, and the overall profile is mostly highway. The longest uninterrupted segment is about 26.7 miles on US 30. At current regular gas prices, budget about $7.51 one way before food or hotel costs.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| US 30 | 26.7 mi | 43m |
| Stadium Freeway | 2.7 mi | 4m |
| Terwilliger Curves | 2.2 mi | 3m |
| Southwest Terwilliger Boulevard | 2 mi | 4m |
| South Terwilliger Boulevard | 1.6 mi | 2m |
| Columbia Boulevard | 0.8 mi | 2m |
| B Avenue | 0.4 mi | 1m |
| North State Street | 0.3 mi | <1m |
Longest stretch:
US 30
— 26.7 mi, about 43m
Turn-by-Turn Driving Directions
Step-by-step road directions between Lake Oswego, OR and Saint Helens, OR.
1
Start on this road
91 ft
·
8 sec
·
this road
2
Turn right
158 ft
·
17 sec
3
Turn left onto Sixth Street
173 ft
·
9 sec
·
Sixth Street
4
Turn right onto B Avenue
0.4 mi
·
1 min
·
B Avenue
5
At end of road, turn left onto OR 43
0.3 mi
·
51 sec
·
North State Street
Use the left lane.
6
Turn left onto Southwest Terwilliger Boulevard
0.7 mi
·
1 min
·
Southwest Terwilliger Boulevard
Use the left lane.
7
Continue on South Terwilliger Boulevard
1.6 mi
·
2 min
·
South Terwilliger Boulevard
8
Enter roundabout onto South Terwilliger Boulevard
126 ft
·
3 sec
·
South Terwilliger Boulevard
9
Continue on South Terwilliger Boulevard
198 ft
·
4 sec
·
South Terwilliger Boulevard
10
Continue on Southwest Terwilliger Boulevard
1.4 mi
·
3 min
·
Southwest Terwilliger Boulevard
11
Take the ramp
0.3 mi
·
47 sec
Toward I 5 North
12
Merge onto I 5
2.2 mi
·
3 min
·
Terwilliger Curves
Use the straight / slight right lanes.
13
Keep slight left at fork onto I 405
2.7 mi
·
4 min
·
Stadium Freeway
Exit 299B
Toward I 405 North: City Center
Use the slight left / slight right lanes.
14
Take the exit
0.5 mi
·
45 sec
Exit 3
Toward US 30 West: Saint Helens
15
Continue on US 30
27 mi
·
43 min
·
US 30
Use the straight / slight right lanes.
16
Turn right onto US 30 Bus
0.8 mi
·
2 min
·
Columbia Boulevard
17
Turn right onto South 8th Street
88 ft
·
3 sec
·
South 8th Street
18
Arrive at destination
South 8th Street
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
19 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 37.7 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 18.8 miles from Lake Oswego, OR, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 125 decision points cluster between mile 0 and 7 — 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
Turn right
Navigation decision point
5
0 mi into trip
|
~0m in
|
Sixth Street
Turn left onto Sixth Street
Navigation decision point
7
0.4 mi into trip
|
~1m in
|
OR 43 / North State Street
At end of road, turn left onto OR 43 / North State Street
Lane positioning matters here
Use the left lane.
5
0.7 mi into trip
|
~2m in
|
Southwest Terwilliger Boulevard
Turn left onto Southwest Terwilliger Boulevard
Lane positioning matters here
Use the left lane.
8
7 mi into trip
|
~13m in
|
I 405 / Stadium Freeway
Keep slight left at fork onto I 405 / Stadium Freeway toward I 405 North: City Center
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 299B
Toward I 405 North: City Center
Fuel & Cost
Regular Gas
$7.51 one way
$15.02 round trip
$5.06/gal
25.4 MPG avg
13 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.36 | $7.95 | $15.90 |
| premium | $5.59 | $8.30 | $16.60 |
| diesel | $5.61 | $8.32 | $16.65 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$8
Estimated CO2 emission: 13.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 69% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 11.3 | 0 | $3.96 | $1.81 |
| Efficient EV | 9.4 | 0 | $3.30 | $1.51 |
| EV Truck/SUV | 15.1 | 0 | $5.28 | $2.41 |
Gas CO2
13 kg
EV CO2
4 kg (69% 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.
Destination
Saint Helens, OR
Afternoon in Saint Helens on Saturday
Local time
1:19 PM
PDT
Current temp
69°F
Unavailable
Live forecast
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
9 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 4m 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.
What kind of drive is this?
37.7 mi in 1h 4m, mostly highway — 26.7 mi of that is on US 30.
78% highway — fuel and pacing are the main things to plan.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 26.7 mi on US 30.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on US 30 and Stadium Freeway. You will hit about 12 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive.
Driving Effort
6/10
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 37.7 miles you will encounter 12 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: near the start: Navigation decision point; near the start (Sixth Street): Navigation decision point; at 0.4 miles (OR 43 / North State Street): Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 4m. Total distance: 37.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 4m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (78%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 26.7 miles on US 30. The full list of main roads is in the Roads section above.
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 Saint Helens, OR before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: near the start: Navigation decision point; near the start (Sixth Street): Navigation decision point; at 0.4 miles (OR 43 / North State Street): Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Saint Helens, OR before heading back.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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