White Pine Trail- The trail is the longest rail/trail system in the state, connecting Grand Rapids with Cadillac. The trail is surfaced with asphalt pavement from North Park St. north of Grand Rapids to the village of Sand Lake; (22 miles). Howard City (1/2 mile) pavement within its limits. 13 mile section Big Rapids and Reed City. South of Leroy to Cadillac. (15 miles). The remaining 45 miles of the trail is surfaced with packed gravel or cinders with pavement planned for the future.