| Piedras Blancas to Romeoville (Illinois) | 3,997.56 mi (6,433.45 km) |
| Piedras Blancas to Romulus (Michigan) | 3,767.76 mi (6,063.62 km) |
| Piedras Blancas to Ronkonkoma (New York) | 3,347.26 mi (5,386.90 km) |
| Piedras Blancas to Roosevelt (New York) | 3,372.57 mi (5,427.62 km) |
| Piedras Blancas to Rosamond (California) | 5,546.53 mi (8,926.28 km) |
| Piedras Blancas to Rosaryville (Maryland) | 3,586.95 mi (5,772.64 km) |
| Piedras Blancas to Roscoe (Illinois) | 4,008.03 mi (6,450.30 km) |
| Piedras Blancas to Rose Hill (Virginia) | 3,599.47 mi (5,792.79 km) |
| Piedras Blancas to Roseburg (Oregon) | 5,303.23 mi (8,534.73 km) |
| Piedras Blancas to Rosedale (California) | 5,557.91 mi (8,944.60 km) |
| Piedras Blancas to Rosedale (Maryland) | 3,553.13 mi (5,718.22 km) |
| Piedras Blancas to Roselle (Illinois) | 3,984.20 mi (6,411.96 km) |
| Piedras Blancas to Roselle (New Jersey) | 3,404.94 mi (5,479.72 km) |
| Piedras Blancas to Roselle Park (New Jersey) | 3,404.85 mi (5,479.58 km) |
| Piedras Blancas to Rosemead (California) | 5,581.72 mi (8,982.92 km) |
