| Edwardsville to Olivares | 4,383.35 mi (7,054.31 km) |
| Edwardsville to Olivenza | 4,295.16 mi (6,912.39 km) |
| Edwardsville to Olot | 4,607.72 mi (7,415.41 km) |
| Edwardsville to Onate | 4,363.11 mi (7,021.75 km) |
| Edwardsville to Onda | 4,566.50 mi (7,349.06 km) |
| Edwardsville to Onteniente | 4,592.22 mi (7,390.47 km) |
| Edwardsville to Orihuela | 4,603.46 mi (7,408.55 km) |
| Edwardsville to Osuna | 4,439.58 mi (7,144.81 km) |
| Edwardsville to Ourense | 4,141.56 mi (6,665.19 km) |
| Edwardsville to Oviedo | 4,200.35 mi (6,759.81 km) |
| Edwardsville to Paiporta | 4,578.85 mi (7,368.94 km) |
| Edwardsville to Pajara | 4,304.93 mi (6,928.12 km) |
| Edwardsville to Palafolls | 4,637.98 mi (7,464.10 km) |
| Edwardsville to Palafrugell | 4,646.73 mi (7,478.19 km) |
| Edwardsville to Palamos | 4,647.90 mi (7,480.08 km) |
