| Cahokia to Popovo | 5,521.97 mi (8,886.75 km) |
| Cahokia to Provadia | 5,572.79 mi (8,968.54 km) |
| Cahokia to Radnevo | 5,562.13 mi (8,951.38 km) |
| Cahokia to Radomir | 5,440.25 mi (8,755.23 km) |
| Cahokia to Rakitovo | 5,509.29 mi (8,866.34 km) |
| Cahokia to Rakovski | 5,527.31 mi (8,895.34 km) |
| Cahokia to Razgrad | 5,523.16 mi (8,888.66 km) |
| Cahokia to Razlog | 5,491.01 mi (8,836.93 km) |
| Cahokia to Ruse | 5,489.08 mi (8,833.81 km) |
| Cahokia to Samokov | 5,472.85 mi (8,807.69 km) |
| Cahokia to Sandanski | 5,498.99 mi (8,849.77 km) |
| Cahokia to Sevlievo | 5,497.29 mi (8,847.04 km) |
| Cahokia to Shumen | 5,550.16 mi (8,932.12 km) |
| Cahokia to Silistra | 5,520.86 mi (8,884.96 km) |
| Cahokia to Sliven | 5,557.98 mi (8,944.71 km) |
