Highway 20 runs along the northern shore of St. John, passing through Virgin Islands National Park.

The highway travels along the coast for most of its length, and has several turnouts for scenic overlooks.

The roadway begins to bend into the center of the island, in the process passing several small houses and buildings.

The northern section, carrying eastbound traffic heads toward the eastern shore, but abruptly ends at an unnumbered road.

After passing through the unusual configuration, the roadway proceeds southeastward.