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Trip from Happy Valley, OR to Lake Oswego, OR

Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards

Drive Time

27m

Distance

13.9 mi

22 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$3

one way

EV Charging

Unknown

Best Time to Leave

Save up to 7 min
4 AM
0h 25m ★
6 AM
0h 27m
8 AM
0h 32m
10 AM
0h 29m
12 PM
0h 29m
3 PM
0h 29m
5 PM
0h 32m
8 PM
0h 26m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Downtown Happy Valley, OR, OR

Happy Valley, OR

damien Saillet

city in Oregon, USA

Lake Oswego, OR

Wikimedia Commons

Trip Overview

The drive from Happy Valley, OR to Lake Oswego, OR covers 13.9 miles and takes about 27m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 205, Willamette Drive, Pacific Highway for much of the mileage, and the overall profile is mixed highway & surface. The longest uninterrupted segment is about 5 miles on I 205. At current regular gas prices, budget about $2.77 one way before food or hotel costs.

Main Roads

Road Distance Duration
I 205 5 mi 6m
Willamette Drive 3 mi 6m
Pacific Highway 1.4 mi 3m
Southeast 129th Avenue 0.8 mi 1m
Southeast Sunnybrook Boulevard 0.8 mi 1m
Southeast Sunnyside Road 0.8 mi 1m
South State Street 0.6 mi 1m
Southeast 122nd Avenue 0.5 mi 1m
Longest stretch: I 205 — 5 mi, about 6m

Turn-by-Turn Driving Directions

Step-by-step road directions between Happy Valley, OR and Lake Oswego, OR.

1

Start on Southeast Mount Scott Boulevard

58 ft · 8 sec · Southeast Mount Scott Boulevard
2

Turn sharp left onto Southeast King Road

158 ft · 3 sec · Southeast King Road
3

Enter roundabout onto Southeast 129th Avenue

137 ft · 2 sec · Southeast 129th Avenue
4

Continue on Southeast 129th Avenue

0.8 mi · 1 min · Southeast 129th Avenue
5

Continue on Southeast 122nd Avenue

0.5 mi · 1 min · Southeast 122nd Avenue
6

Turn right onto Southeast Sunnyside Road

0.8 mi · 1 min · Southeast Sunnyside Road
7

Turn left onto Southeast Sunnybrook Boulevard

0.8 mi · 1 min · Southeast Sunnybrook Boulevard
Use the left lane.
8

Turn left

0.3 mi · 35 sec
Toward I 205 South: Oregon City Use the left lane.
9

Merge onto I 205

5.0 mi · 6 min · I 205
Use the straight lane.
10

Take the exit

0.2 mi · 26 sec
Exit 8 Toward OR 43: West Linn, Lake Oswego Use the slight right lane.
11

Turn right onto OR 43

3.0 mi · 6 min · Willamette Drive
Use the straight / right lanes.
12

Continue on OR 43

1.4 mi · 3 min · Pacific Highway
13

Continue on OR 43

0.6 mi · 1 min · South State Street
14

Turn left onto A Avenue

0.4 mi · 1 min · A Avenue
Use the left lane.
15

Turn right

214 ft · 15 sec
16

Arrive at destination

Heads-up: tricky spots

5 of 10

5 decision points cluster between mile 0 and 13.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

6
0 mi into trip | ~0m in | Southeast King Road

Turn sharp left onto Southeast King Road

Sharp turn - reduce speed on approach

5
0 mi into trip | ~0m in | Southeast 129th Avenue

Enter roundabout onto Southeast 129th Avenue

Roundabout - know your exit number before entering

6
3 mi into trip | ~6m in

Turn left toward I 205 South: Oregon City

Lane positioning matters here

Use the left lane. Toward I 205 South: Oregon City
8
8.3 mi into trip | ~13m in

Take the exit toward OR 43: West Linn, Lake Oswego

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight right lane. Exit 8 Toward OR 43: West Linn, Lake Oswego
6
13.4 mi into trip | ~25m in | A Avenue

Turn left onto A Avenue

Lane positioning matters here

Use the left lane.

Fuel & Cost

Regular Gas

$2.77 one way

$5.54 round trip

$5.06/gal 25.4 MPG avg 5 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $5.36 $2.93 $5.86
premium $5.59 $3.06 $6.12
diesel $5.61 $3.07 $6.14

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$3

Estimated CO2 emission: 4.9 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $1 in charging · 0 stops · 60% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 4.2 0 $1.46 $0.67
Efficient EV 3.5 0 $1.22 $0.56
EV Truck/SUV 5.6 0 $1.95 $0.89

Gas CO2

5 kg

EV CO2

2 kg (60% 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 18, 2026

Origin

Happy Valley, OR

Morning in Happy Valley on Saturday

Local time

10:28 AM

PDT

Current temp

49°F

Unavailable

Live forecast

Destination

Lake Oswego, OR

Morning in Lake Oswego on Saturday

Local time

10:28 AM

PDT

Current temp

42°F

Mostly Cloudy

ENE 1 mph 1% chance Live forecast

Freeze Warning

Freeze Warning issued April 17 at 10:00PM MDT until April 18 at 10:00AM MDT by NWS Boise ID

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

7 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

27m on the road

The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

What kind of drive is this?

13.9 mi in 27m — 36% highway, the rest on surface roads. Biggest road: I 205.

36% highway, the rest on surface roads — varied driving throughout.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 5 mi on I 205.

How Hard Is This Drive?

6/10

This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near Southeast King Road.

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 13.9 miles you will encounter 10 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 (Southeast King Road): Sharp turn - reduce speed on approach; near the start (Southeast 129th Avenue): Roundabout - know your exit number before entering; at 3 miles: Lane positioning matters here.

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 27m. Total distance: 13.9 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

27m drive, comfortable solo distance.

EV Driver

0 DC fast chargers along the route. Coverage: unknown.

First-Time Driver

Mostly highway driving (36%). Some complex stretches to watch for.

Scenic Drive

Mixed highway & surface route profile.

Frequently Asked Questions

The longest stretch is about 5 miles on I 205. 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 Lake Oswego, 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 (Southeast King Road): Sharp turn - reduce speed on approach; near the start (Southeast 129th Avenue): Roundabout - know your exit number before entering; at 3 miles: Lane positioning matters here.

Yes. A round trip is manageable in a single day if you plan a break at Lake Oswego, 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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