Don’t confuse this trail with the self-guided loop [1]. The Cinnamon Bay Trail is a 1.1-mile uphill trail that begins about 100 yards east of the Cinnamon Bay campground [2] entrance and follows an old Danish road all the way to Centerline Road. Of course, if you start at Centerline Road it is all downhill. The trail passes through land that would have been cultivated with sugarcane during the plantation era; it is now all secondary forest.
Links:
[1] http://www.moon.com/destinations/virgin-islands/st-john/recreation/hiking/cinnamon-bay-loop
[2] http://www.moon.com/destinations/virgin-islands/st-john/accommodations/campgrounds/cinnamon-bay-campground