Fitness & Skill Level
This trip is rated moderate. No single day is hard. What adds up is doing something every day, in the cold, while learning as you go.
The ski day is the gentlest, at beginner pace and flat along the frozen river. The snowshoe day is longer, and walking in deep snow is more work than walking on a path. The snowmobile day is easier on the legs and harder on the arms than people expect.
The dog sledding is the one to train for. You stand on the runners rather than sit, kick to help the team up the rises, hold the brake on the descents and shift your weight through the corners. Then there is harnessing, feeding and settling the dogs at the cabin. They do the pulling. You do everything else.
Cold is the multiplier across all of it. Simple jobs take twice as long in mittens, so eat more than you think you need and drink more than you feel like drinking. The cabin night asks less of your legs and more of your attitude.
You will be fine here if you are comfortable being on your feet most of the day, several days running. To arrive feeling strong, build up with regular cardio plus anything that works your legs and core, because balance is what makes standing on a moving sled easy rather than tiring.
Skill
This trip is rated beginner. No experience is needed for any of it, and most people arrive having done none of it before.
Dog sledding is taught from scratch: a full safety briefing, then harnessing your team, reading their body language, the commands, the brake and the corners. The huskies are seasoned professionals who know these trails better than your guide does. Your job is learning to work with them rather than against them.
The ski session is an introduction on flat ground, and snowshoeing takes about ten minutes to get the hang of. One practical point on the snowmobiles: bring your driving licence if you want to drive one, otherwise you ride as a passenger.