Cross Country Ski Trails Sheehan Park has 3 different cross country ski trails, ranging from .95 miles to 1.35 miles. All trails are rated easy to intermediate. Ski trails begin by the hill located near the Sheehan east shelter. Trails are signed appropriately. Cross country ski trails are available on an "as is" basis and are not groomed. View the map for Sheehan Park (PDF) showing the trails.