The summit of Mt. Rainier Looking down on Little Tahoma Mountaineering is the sport of climbing really big and sometimes dangerous mountains. Glaciers are one reason why. If you know what you are doing, Mt. Rainier takes about two days to climb. They trained on Mt. Rainier, in fact, to get ready for Everest. For a fee, RMI will show you how to climb Mt. Rainier and take you to the top.
Buses then go from Seattle to Mt. Rainier National Park.
If you have camping and hiking equipment with you, it is easiest to take a car. Mt. Rainier is one of the snowiest places on earth. Mt. Rainier is a very cloudy and rainy place, however, so even in the summer the chances are good that you will hit some bad weather. If you want to see anything good, you may have to wait around a few days for the clouds and fog to clear out. Even if you don't climb to the top of the mountain you can climb part of the way up.