| Country: | CRI |
| Type: | Secondary |
| Route: | 139 |
| Map Custom: | yes --> |
| Direction A: | NORTH/SOUTH/EAST/WEST? |
| Direction B: | NORTH/SOUTH/EAST/WEST? |
| Terminus B: | --> |
| Provinces: | Alajuela |
| Length Km: | 21.665 |
| Length Round: | 2 |
| Previous Type: | RNS |
| Previous Route: | 138 |
| Next Type: | RNS |
| Next Route: | 140 |
National Secondary Route 139, or just Route 139 (Spanish; Castilian: Ruta Nacional Secundaria 139, or Spanish; Castilian: Ruta 139) is a National Road Route of Costa Rica, located in the Alajuela province.[1]
In Alajuela province the route covers Los Chiles canton (Caño Negro district), Guatuso canton (Buenavista district).