| Collegedale to Orbetello | 4,921.92 mi (7,921.06 km) |
| Collegedale to Oria | 5,273.87 mi (8,487.48 km) |
| Collegedale to Oristano | 4,893.03 mi (7,874.57 km) |
| Collegedale to Orta Nova | 5,158.60 mi (8,301.97 km) |
| Collegedale to Orte | 4,972.42 mi (8,002.34 km) |
| Collegedale to Ortona | 5,063.63 mi (8,149.13 km) |
| Collegedale to Orvieto | 4,951.18 mi (7,968.15 km) |
| Collegedale to Orzinuovi | 4,764.68 mi (7,668.01 km) |
| Collegedale to Osimo | 4,982.71 mi (8,018.90 km) |
| Collegedale to Ospitaletto | 4,765.38 mi (7,669.15 km) |
| Collegedale to Ostuni | 5,262.54 mi (8,469.24 km) |
| Collegedale to Ottaviano | 5,123.04 mi (8,244.74 km) |
| Collegedale to Ovada | 4,735.00 mi (7,620.25 km) |
| Collegedale to Ozieri | 4,888.26 mi (7,866.90 km) |
| Collegedale to Paceco | 5,143.76 mi (8,278.08 km) |
