| Bettendorf to Orbetello | 4,862.48 mi (7,825.40 km) |
| Bettendorf to Oria | 5,201.54 mi (8,371.06 km) |
| Bettendorf to Oristano | 4,865.30 mi (7,829.95 km) |
| Bettendorf to Orta Nova | 5,088.60 mi (8,189.31 km) |
| Bettendorf to Orte | 4,907.91 mi (7,898.52 km) |
| Bettendorf to Ortona | 4,991.45 mi (8,032.96 km) |
| Bettendorf to Orvieto | 4,885.75 mi (7,862.86 km) |
| Bettendorf to Orzinuovi | 4,686.02 mi (7,541.43 km) |
| Bettendorf to Osimo | 4,905.47 mi (7,894.59 km) |
| Bettendorf to Ospitaletto | 4,684.90 mi (7,539.62 km) |
| Bettendorf to Ostuni | 5,188.69 mi (8,350.39 km) |
| Bettendorf to Ottaviano | 5,062.19 mi (8,146.81 km) |
| Bettendorf to Ovada | 4,667.68 mi (7,511.91 km) |
| Bettendorf to Ozieri | 4,853.21 mi (7,810.49 km) |
| Bettendorf to Paceco | 5,113.87 mi (8,229.99 km) |
