How far is Portland, OR from Saint Helens, OR?
The driving distance from Portland, OR to Saint Helens, OR is about 29.1 miles (46.8 km), with a travel time of about 00h 49m by car.
- The straight-line flight distance is about 24.4 miles (39.2 km).
- For a round trip, plan for roughly 01h 39m 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 49m.
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.
Driving Route Map
The map below follows the saved road route between Portland and Saint Helens.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portland and Saint Helens.
-
1
Start on the route
34 m · 13 sec
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2
Turn left onto Northwest Couch Street
2482 ft · 2 min · Northwest Couch Street
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3
Take the ramp right toward I 405 North, US 30 West
1059 ft · 24 sec
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4
Merge slight left onto Stadium Freeway
1586 ft · 27 sec · Stadium Freeway
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5
Take the exit slight left toward US 30 West: Saint Helens
2400 ft · 45 sec
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6
Continue straight
26.7 mi · 43 min
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7
Turn right onto Columbia Boulevard
1.4 km · 2 min · Columbia Boulevard
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8
Turn right onto South 8th Street
27 m · 4 sec · South 8th Street
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9
Arrive at your destination
0 m · 1 sec · South 8th Street
Car Route Details
A richer read on the saved driving route between Portland and Saint Helens.
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.
US 30 West
Continue straight
26.7 mi · 00h 43m
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.
Sunny leaving Portland and Sunny near Saint Helens.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portland to Saint Helens?
The road trip is about 29.1 miles (46.8 km) and usually takes 00h 49m 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?
Scappoose is a useful midpoint, sitting about 14.5 miles from Portland and 14.5 miles from Saint Helens.
How much longer is the road route than the straight-line distance?
The direct path is about 24.4 miles (39.2 km), while the road route adds roughly 4.7 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 4:50 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.05 one way or $10.10 round trip. Estimated CO2 is about 9.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Portland and Sunny near Saint Helens.
Stop Ideas Near Scappoose
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Powell's City of Books
Bureau of Planning and Sustainability
Hillsboro Civic Center
St Helens Public Works Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Scappoose.
Vancouver station
Manning, Oregon
Portland, OR
Union Station
Flight Path Map
This map shows the direct air route between Portland and Saint Helens. Straight-line distance: 24.36 mi (39.2 km).
#1 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 |
#2 Saint Helens
City in Oregon, USA
| Population | 14,071 |
| Coordinates | 45.8640000, -122.8064900 |
| Altitude | 27 |
| Country | United States |
End: Saint Helens (-122.80649, 45.864)
Estimated Travel Time
Distance: 47 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 58m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $5.05 | $10.10 |
| Mid-grade | $5.34 | $5.44 | $10.89 |
| Premium | $5.57 | $5.68 | $11.35 |
| Diesel | $6.37 | $6.49 | $12.99 |
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 · Jun 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.