To provide an accurate distance to Portland, Oregon, I would need to know your starting location, as distances vary significantly depending on where you're coming from. For example, if you're traveling from Seattle, Washington, the distance is approximately 170 miles, while a trip from San Francisco, California, is around 640 miles.
If you let me know your starting city, I can give you a more precise distance and any relevant travel tips for your journey. Alternatively, if you're interested in different routes or modes of transportation, I can provide insights on those as well.