It's even better when you can ski for free. Well, sort of. Pony up payment on next year's season pass to Catamount and the Cat is free in March. That's a lot of ridin' gratis, if you look at it the right way. No restrictions on this Berkshires beauty. Over at Jiminy Peak, they're unleashing a Mountain Dew Vertical Challenge on Sunday. Fun race, party, prizes, samples, music... what's not to like? Ski Butternut slathers it on this weekend and through the end of the month. Let's start with Saturday's Butternut Squash Jam II. This rail jam for all riders will set you back $15, but if you're 13 and up, you ride it on the Twisted Terrain Park. And starting Monday? Yeah, we're talking $15 lift tickets, straight through to the end of the season, weekends included. And Wachusett Mountain. Friday, the Ralph Crowley Ski Classic, top skiers, open event, 'nuff said.