| Channelview to Orbetello | 5,601.38 mi (9,014.55 km) |
| Channelview to Oria | 5,950.96 mi (9,577.15 km) |
| Channelview to Oristano | 5,578.24 mi (8,977.31 km) |
| Channelview to Orta Nova | 5,836.05 mi (9,392.22 km) |
| Channelview to Orte | 5,650.84 mi (9,094.14 km) |
| Channelview to Ortona | 5,740.38 mi (9,238.25 km) |
| Channelview to Orvieto | 5,629.34 mi (9,059.55 km) |
| Channelview to Orzinuovi | 5,439.19 mi (8,753.53 km) |
| Channelview to Osimo | 5,658.03 mi (9,105.71 km) |
| Channelview to Ospitaletto | 5,439.41 mi (8,753.88 km) |
| Channelview to Ostuni | 5,939.24 mi (9,558.28 km) |
| Channelview to Ottaviano | 5,802.54 mi (9,338.29 km) |
| Channelview to Ovada | 5,412.31 mi (8,710.28 km) |
| Channelview to Ozieri | 5,572.33 mi (8,967.80 km) |
| Channelview to Paceco | 5,828.97 mi (9,380.82 km) |
