| Cahokia to Robertsville (New Jersey) | 855.13 mi (1,376.20 km) |
| Cahokia to Robinson (Texas) | 628.81 mi (1,011.97 km) |
| Cahokia to Robstown (Texas) | 860.29 mi (1,384.50 km) |
| Cahokia to Rochester (Michigan) | 466.78 mi (751.21 km) |
| Cahokia to Rochester (Minnesota) | 395.00 mi (635.69 km) |
| Cahokia to Rochester (New Hampshire) | 1,051.47 mi (1,692.17 km) |
| Cahokia to Rochester (New York) | 728.39 mi (1,172.24 km) |
| Cahokia to Rochester Hills (Michigan) | 464.38 mi (747.35 km) |
| Cahokia to Rock Hill (South Carolina) | 564.91 mi (909.14 km) |
| Cahokia to Rock Island (Illinois) | 201.84 mi (324.83 km) |
| Cahokia to Rock Springs (Wyoming) | 1,025.95 mi (1,651.10 km) |
| Cahokia to Rockford (Illinois) | 261.92 mi (421.52 km) |
| Cahokia to Rockledge (Florida) | 891.87 mi (1,435.32 km) |
| Cahokia to Rocklin (California) | 1,667.60 mi (2,683.74 km) |
| Cahokia to Rockport (Texas) | 829.04 mi (1,334.21 km) |
