Hi Doug, a couple of Whitehorse-based outfitters that might be worth contacting are Yukon Wide Adventures (http://www.yukonwide.com) and Up North Adventures (http://upnorthadventures.com). Both offer full-day guided snowmobile outings for $285CAD, while Up North has a half-day trip for $185. You can also sign on for longer multi-day trips with either of these outfitters for a true taste of the Great White North!