I've been back country bike packing for 15 years in the WA East Cascades. I ride mid-June until Nov 1 from Chinook Pass to Lk Chelan. The rides are 2 to 3 days in the back country with a 35 lb pack from 5000' to 8000'. Lots of snow, mud, bugs, steep hills, and some of the toughest riding you'll find. Email me f you're interested.