Head for the border! The Presque Isle/Pomeroy/ Henry Lake Trail begins on the border of Wisconsin and Michigan’s Upper Peninsula. This extensive trail system takes mountain bikers up into some of the region’s most beautiful lake country. The trail offers over 100 miles of gravel roads for mountain biking, with loops of 7 to 16 miles that are perfect for beginners. Parking is available in the community of Presque Isle at the Presque Isle Community Building.