The Pugo–Rosario Road is a major road in La Union that connects from MacArthur Highway and Tarlac–Pangasinan–La Union Expressway in Rosario to the Aspiras–Palispis Highway in Pugo.

It is the alternative route to Marcos Highway for motorists going to Pugo and Baguio.

The road forms part of National Route 209 (N209) of the Philippine highway network.

[1] The entire route is located in La Union.

Intersections are numbered by kilometer post, with the Rizal Park in Manila designated as Kilometer Zero.