An experienced group can cover 10 to 12 miles on cross-country skis. Always allow ample time to make camp in winter, especially if you plan to build snow shelters. Fatigue encourages accidents. Periodic rests also help avoid overheating. Pulling a load over the snow on a sled or toboggan is generally easier than carrying it in a backpack.
Snow is a terrific insulator.
Snow shelters are much warmer than tents because they retain heat and keep out the cold wind. If you have adequate time for building snow shelters, you will spend a much more comfortable night sleeping in them than in a tent. Snow is the greatest thief in winter, swallowing up small dropped items. Tie or tape a piece of brightly colored cord to small items so they can be seen in snow. Some items, such as mittens, can be tied to larger items, such as a parka, to prevent them from being dropped and lost.