Off Season Cross-Training for Hiking and Backpacking

Winter is fast approaching, weather windows for hiking are rapidly diminishing (if not completely vanishing), and it gets dark waaaaay too early now. I'm sure some of you will be layering on the waterproof jacket and venturing out into the west coast rain, trading in your hiking boots for snowshoes and skies, or even heading south for sunnier, drier conditions. And some of you may be thinking 'well, I guess those trails can wait until next year...'