The Summit - Two Sno Park areas are available, but a Sno-Park pass is required. They include Gold Creek on the North side of I-90, and Hyak - located on the south side of I-90. (Sledding, snowshoeing, etc.). Dogs are not permitted at the Hyak Sno-Park.
Blewett Pass - Swauk Campground offers Snowshoeing and plenty of non-motorized snow fun. A Sno-Park pass is required.