| Cahokia to Reidsville (North Carolina) | 596.12 mi (959.36 km) |
| Cahokia to Reisterstown (Maryland) | 719.52 mi (1,157.96 km) |
| Cahokia to Rendon (Texas) | 572.59 mi (921.50 km) |
| Cahokia to Reno (Nevada) | 1,586.04 mi (2,552.48 km) |
| Cahokia to Renton (Washington) | 1,715.55 mi (2,760.91 km) |
| Cahokia to Republic (Missouri) | 203.34 mi (327.24 km) |
| Cahokia to Reston (Virginia) | 691.38 mi (1,112.67 km) |
| Cahokia to Revere (Massachusetts) | 1,039.65 mi (1,673.15 km) |
| Cahokia to Rexburg (Idaho) | 1,176.93 mi (1,894.08 km) |
| Cahokia to Reynoldsburg (Ohio) | 406.50 mi (654.20 km) |
| Cahokia to Rialto (California) | 1,539.28 mi (2,477.23 km) |
| Cahokia to Richardson (Texas) | 532.02 mi (856.21 km) |
| Cahokia to Richfield (Minnesota) | 464.42 mi (747.41 km) |
| Cahokia to Richfield (Wisconsin) | 338.28 mi (544.41 km) |
| Cahokia to Richland (Washington) | 1,567.11 mi (2,522.03 km) |
