Olympic National Park is known for its diverse range of ecosystems, including temperate rainforests, rugged coastlines, and glacier-capped mountains, all within one park. It's also known for its abundant wildlife, numerous hiking trails, and stunning scenery, offering something for every outdoor enthusiast. It can easily be done in 4-5 days or even less if you're okay driving long distances. The park is relatively big and takes about 8 hrs to drive the whole thing if you're coming from Seattle so I recommend at least 2 nights to help break up the driving.