| Cahokia to Ridgeland (Mississippi) | 424.33 mi (682.90 km) |
| Cahokia to Ridgewood (New Jersey) | 868.07 mi (1,397.02 km) |
| Cahokia to Rifle (Colorado) | 944.89 mi (1,520.66 km) |
| Cahokia to Rincon (Georgia) | 663.65 mi (1,068.04 km) |
| Cahokia to Ringwood (New Jersey) | 860.59 mi (1,384.99 km) |
| Cahokia to Río Grande (Puerto Rico) | 2,019.97 mi (3,250.83 km) |
| Cahokia to Rio Grande City (Texas) | 979.90 mi (1,577.00 km) |
| Cahokia to Rio Linda (California) | 1,679.21 mi (2,702.43 km) |
| Cahokia to Rio Rancho (New Mexico) | 938.65 mi (1,510.61 km) |
| Cahokia to Rio Rico (Arizona) | 1,270.92 mi (2,045.35 km) |
| Cahokia to Ripon (California) | 1,674.66 mi (2,695.11 km) |
| Cahokia to River Edge (New Jersey) | 871.53 mi (1,402.60 km) |
| Cahokia to River Falls (Wisconsin) | 452.86 mi (728.81 km) |
| Cahokia to River Forest (Illinois) | 261.57 mi (420.96 km) |
| Cahokia to River Grove (Illinois) | 262.88 mi (423.06 km) |
