If you ever wanted to get your kids to try cross-country skiing, the Bretton Woods Nordic Center would be the place. The 100-km network, one of the largest in New England, features miles of groomed trails that cross over bridges and glide along streams on trails like Dark Forest or down hills on Coronary. Socked in a valley below the snow-capped peaks, the views couldn’t be more jaw dropping. The Nordic Center rents skies and boots. Don’t forget to bring bottled water. It’s a good workout.