This trail goes from Grand Rapids to Cadillac. Almost 100 miles. The trail is scenic, but has very little uphill or downhill and few turns. It passes through little towns along the way which can be very pleasant. It's mostly paved with an unpaved section between Sand Lake and Howard City (I added markers on the map). Road bikes can ride on the road that runs parallel. There can be a lot of twigs and similar debris on the trail. Be careful when riding a road bike. This is an easy trail. Distance can make it difficult, but you can always turn around. There are a lot of parking areas along the trail, so you can start and end wherever you want.