| Country: | CRI |
| Type: | Tertiary |
| Route: | 306 |
| Map Custom: | yes --> |
| Direction A: | NORTH/SOUTH/EAST/WEST? |
| Direction B: | NORTH/SOUTH/EAST/WEST? |
| Terminus B: | --> |
| Provinces: | San José |
| Length Km: | 3.615 |
| Length Round: | 2 |
| Previous Type: | RNT |
| Previous Route: | 304 |
| Next Type: | RNT |
| Next Route: | 307 |
National Tertiary Route 306, or just Route 306 (Spanish; Castilian: Ruta Nacional Terciaria 306, or Spanish; Castilian: Ruta 306) is a National Road Route of Costa Rica, located in the San José province.[1]
In San José province the route covers Montes de Oca canton (San Pedro, San Rafael districts), Curridabat canton (Granadilla district).