Snoqualmie Pass is in the Cascade Mountains of Washington State
Mountains to Sound Greenway
The corridor of I-90 over Snoqualmie Pass is known as the Mountains To Sound Greenway , and offers many sightseeing and exploration opportunities, only a short distance from Seattle. You can print out and take along a PDF "Geo-Tour" of the MTSG at 
Summit At Snoqualmie
With four alpine base areas summit  ski slopes that vary from beginner to advanced. Nights skiing is also available
There are numerous hiking opportunities around the Snoqualmie Pass area. This is not an area that much solitude will be found on the hike.