DriveWindow Canada route answer
How long is the drive from Seattle to Portland?
The drive is typically 3 hours and covers 282 km via I-5 through western Washington and Oregon. Allow extra time when persistent rain or standing water affects the corridor.
Route facts
Seattle → Portland
- Distance
- 282 km
- Typical drive
- 3 hours
- Planning baseline
- Midday
- Main weather risks
- persistent rain · standing water · low visibility through heavier showers
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Time and distance
Why the trip can take longer than the baseline
- Distance
- 282 km
- Typical drive
- 3 hours
- Weather-sensitive corridor
- I-5 through western Washington and Oregon
3 hours is a typical estimate for the 282 km drive. It does not include fuel, charging, food, border, park-entry, or weather-related stops.
Build extra time into the plan when persistent rain reduces visibility or when standing water affects a comfortable driving speed.
What to check before leaving
Cool-season rain patterns make timing useful even when the route stays at low elevation. Key weather factors: persistent rain, standing water, low visibility through heavier showers.
- persistent rain
- standing water
- low visibility through heavier showers
Route planning answers
Common questions about this drive
Sources and methodology
How this answer is produced
Drive time and distance are planning baselines, not live traffic estimates. Website guidance combines route-specific research, representative corridor points, and official source links; the app completes the forecast for your date and departure time.
US National Weather Service Environment and Climate Change Canada WSDOT Travel CenterOregon TripCheck Route weather methodology Data-source policy