How far is Rainier, OR from Portland, OR?
The driving distance from Rainier, OR to Portland, OR is about 46.5 miles (74.9 km), with a travel time of about 01h 02m by car.
- The straight-line flight distance is about 41 miles (66 km).
- For a round trip, plan for roughly 02h 04m 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 02m.
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 Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Rainier and Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rainier and Portland.
-
1
Start on East 1st Street
14 m · 9 sec · East 1st Street
-
2
Turn left onto West B Street
2204 ft · 1 min · West B Street
-
3
Continue on Lower Columbia River Highway
1.1 mi · 2 min · Lower Columbia River Highway
-
4
Take the exit slight right toward WA 433 North: Longview, Seattle
906 ft · 19 sec
-
5
Turn right onto Oregon Way
2.5 mi · 6 min · Oregon Way
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6
Turn right onto Tennant Way
3.1 mi · 5 min · Tennant Way
-
7
Take the exit slight right toward I 5 South: Portland
3159 ft · 1 min
-
8
Merge slight left
28.6 mi · 31 min
-
9
Keep slight left
12.9 mi · 17 min
-
10
Take the exit slight right toward I 405, US 30 West: Beaverton, Saint Helens
2766 ft · 50 sec
-
11
Continue on Stadium Freeway
1.2 mi · 2 min · Stadium Freeway
-
12
Take the exit slight right toward Couch Street, Burnside Street
1308 ft · 44 sec
-
13
Turn left onto Northwest Couch Street
2736 ft · 2 min · Northwest Couch Street
-
14
Turn right
34 m · 8 sec
-
15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Rainier and Portland.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 5 South
Merge slight left
28.6 mi · 00h 31m
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 Sunny leaving Rainier and Mostly Sunny near Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rainier to Portland?
The road trip is about 46.5 miles (74.9 km) and usually takes 01h 02m 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?
Saint Helens is a useful midpoint, sitting about 26 miles from Rainier and 20.6 miles from Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 41 miles (66 km), while the road route adds roughly 5.5 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 4:26 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.12 one way or $16.24 round trip. Estimated CO2 is about 14.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Rainier and Mostly Sunny near Portland.
Stop Ideas Near Saint Helens
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Kiwanis Park
FedEx Drop Box
City of Battle Ground
Battle Ground Community Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Saint Helens.
Vancouver station
Kelso Multimodal Transportation Center
Manning, Oregon
Portland, OR
Flight Path Map
This map shows the direct air route between Rainier and Portland. Straight-line distance: 41.03 mi (66.03 km).
#1 Rainier
City in Oregon, USA
| Population | 2,021 |
| Coordinates | 46.0890000, -122.9359400 |
| Altitude | 15 |
| Country | United States |
#2 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 |
End: (-122.676082, 45.523482)
Estimated Travel Time
Distance: 75 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 33m |
| 40 mph (64.37 km/h) | 01h 09m |
| 50 mph (80.47 km/h) | 00h 55m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 39m |
| 80 mph (129 km/h) | 00h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $8.12 | $16.24 |
| Mid-grade | $5.34 | $8.75 | $17.51 |
| Premium | $5.57 | $9.13 | $18.26 |
| Diesel | $6.37 | $10.44 | $20.88 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.