Mt. Rainier is the tallest mountain of volcanic origin here in the state of Washington. It is located southeastern portion of Seattle and Tacoma areas and about 54 miles from Seattle. The summit elevation is 14,411 ft. It has large amount of glaciers with some subsidiary peaks. We've been there twice but did not really go to the peak, only to the parks where tourist are allowed, although if you want to the backpacking thing they have arranged guided tours as well.
We went there on fall 2010. We did not walk the trail farther because it was very cold and windy. We forgot to bring the baby carrier since it was an impromptu trip. I would love to go back there on a spring time and see the gardens and the alpine gardens in bloom.