| Country: | CRI |
| Type: | Tertiary |
| Route: | 315 |
| Map Custom: | yes --> |
| Direction A: | NORTH/SOUTH/EAST/WEST? |
| Direction B: | NORTH/SOUTH/EAST/WEST? |
| Terminus B: | --> |
| Provinces: | San José, Cartago |
| Length Km: | 14.965 |
| Length Round: | 2 |
| Previous Type: | RNT |
| Previous Route: | 314 |
| Next Type: | RNT |
| Next Route: | 316 |
National Tertiary Route 315, or just Route 315 (Spanish; Castilian: Ruta Nacional Terciaria 315, or Spanish; Castilian: Ruta 315) is a National Road Route of Costa Rica, located in the San José, Cartago provinces.[1]
In San José province the route covers Dota canton (Santa María, Copey districts).
In Cartago province the route covers El Guarco canton (San Isidro district).