| Country: | CRI |
| Type: | Secondary |
| Route: | 251 |
| Map Custom: | yes --> |
| Direction A: | NORTH/SOUTH/EAST/WEST? |
| Direction B: | NORTH/SOUTH/EAST/WEST? |
| Terminus B: | --> |
| Provinces: | San José, Cartago |
| Length Km: | 6.905 |
| Length Round: | 2 |
| Previous Type: | RNS |
| Previous Route: | 250 |
| Next Type: | RNS |
| Next Route: | 252 |
National Secondary Route 251, or just Route 251 (Spanish; Castilian: Ruta Nacional Secundaria 251, or Spanish; Castilian: Ruta 251) is a National Road Route of Costa Rica, located in the San José, Cartago provinces.[1]
In San José province the route covers Curridabat canton (Curridabat, Sánchez districts).
In Cartago province the route covers La Unión canton (Tres Ríos, San Juan, San Rafael districts).