| Cahokia to Romeoville (Illinois) | 238.69 mi (384.13 km) |
| Cahokia to Romulus (Michigan) | 438.46 mi (705.63 km) |
| Cahokia to Ronkonkoma (New York) | 918.41 mi (1,478.04 km) |
| Cahokia to Roosevelt (New York) | 893.83 mi (1,438.48 km) |
| Cahokia to Rosamond (California) | 1,567.46 mi (2,522.58 km) |
| Cahokia to Rosaryville (Maryland) | 719.85 mi (1,158.48 km) |
| Cahokia to Roscoe (Illinois) | 273.74 mi (440.54 km) |
| Cahokia to Rose Hill (Virginia) | 704.61 mi (1,133.97 km) |
| Cahokia to Roseburg (Oregon) | 1,750.31 mi (2,816.85 km) |
| Cahokia to Rosedale (California) | 1,610.36 mi (2,591.62 km) |
| Cahokia to Rosedale (Maryland) | 735.81 mi (1,184.17 km) |
| Cahokia to Roselle (Illinois) | 260.51 mi (419.26 km) |
| Cahokia to Roselle (New Jersey) | 858.35 mi (1,381.38 km) |
| Cahokia to Roselle Park (New Jersey) | 858.07 mi (1,380.93 km) |
| Cahokia to Rosemead (California) | 1,577.79 mi (2,539.21 km) |
