| Placentia to Romeoville (Illinois) | 1,701.48 mi (2,738.27 km) |
| Placentia to Romulus (Michigan) | 1,947.98 mi (3,134.97 km) |
| Placentia to Ronkonkoma (New York) | 2,475.78 mi (3,984.39 km) |
| Placentia to Roosevelt (New York) | 2,452.32 mi (3,946.64 km) |
| Placentia to Rosamond (California) | 71.10 mi (114.42 km) |
| Placentia to Rosaryville (Maryland) | 2,289.48 mi (3,684.56 km) |
| Placentia to Roscoe (Illinois) | 1,664.93 mi (2,679.45 km) |
| Placentia to Rose Hill (Virginia) | 2,274.23 mi (3,660.02 km) |
| Placentia to Roseburg (Oregon) | 710.13 mi (1,142.85 km) |
| Placentia to Rosedale (California) | 129.41 mi (208.27 km) |
| Placentia to Rosedale (Maryland) | 2,303.73 mi (3,707.50 km) |
| Placentia to Roselle (Illinois) | 1,705.92 mi (2,745.42 km) |
| Placentia to Roselle (New Jersey) | 2,417.05 mi (3,889.87 km) |
| Placentia to Roselle Park (New Jersey) | 2,416.65 mi (3,889.23 km) |
| Placentia to Rosemead (California) | 18.39 mi (29.60 km) |
