In order to enjoy this Sunrise Lodge guided backcountry adventure, you need to have an excellent level of fitness as this is a full week of ski touring. Your guide will choose the appropriate pace and terrain for your group, but you will need to manage controlled descents in variable conditions and be able to skin uphill for a few hours at time carrying a loaded daypack.
For the Relaxed Pace: You should be capable and happy to ski up to 1100 m/day, give or take. On average, ski runs will be of intermediate difficulty. This is hard to translate into ski resorts, but generally this means that you are comfortable on black diamond runs, even if it means taking your time, and in a variety of conditions (icy, deep powder, breakable crust).
For the Classic Pace: You should be happy with days in the 1300-1500m range. On average, ski runs will be of intermediate difficulty (as in the Relaxed Pace) but there will often be pitches of advanced difficulty as well as steeper tree runs and rugged alpine snow conditions involving hard and sastrugi surfaces.