National Secondary Route 143, or just Route 143 (Spanish: Ruta Nacional Secundaria 143, or Ruta 143) is a National Road Route of Costa Rica, located in the Alajuela, Guanacaste provinces.

[1] In Alajuela province the route covers Guatuso canton (San Rafael, Cote districts).

In Guanacaste province the route covers Tilarán canton (Arenal district).

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