The northwest bound segment of the road from here to Puerto Carrillo can only be driven in the dry season, and only with off-road capable vehicles.

In the wet season there is a highly chance for a needed river crossing between Nosara and Ostional.

It passes many beaches and tourist areas including Sámara, Nosara and the Ostional Wildlife Refuge.

At Veintisiete de Abril the road turns to a northeastern direction, becomes paved and continues until it meets again with Route 21 at Santa Cruz In Guanacaste province the route covers Nicoya canton (Sámara, Nosara districts), Santa Cruz canton (Santa Cruz, Veintisiete de Abril, Cuajiniquil districts), Nandayure canton (Zapotal, Bejuco districts), Hojancha canton (Puerto Carrillo district).

Proper asphalt roads and three new bridges are being constructed since April 2018, in the segment between the ferry terminals.