| Kailua to Orbetello | 7,970.49 mi (12,827.27 km) |
| Kailua to Oria | 8,150.12 mi (13,116.35 km) |
| Kailua to Oristano | 8,110.79 mi (13,053.05 km) |
| Kailua to Orta Nova | 8,082.77 mi (13,007.97 km) |
| Kailua to Orte | 7,980.28 mi (12,843.01 km) |
| Kailua to Ortona | 8,004.16 mi (12,881.45 km) |
| Kailua to Orvieto | 7,960.22 mi (12,810.74 km) |
| Kailua to Orzinuovi | 7,757.21 mi (12,484.03 km) |
| Kailua to Osimo | 7,919.82 mi (12,745.72 km) |
| Kailua to Ospitaletto | 7,748.18 mi (12,469.49 km) |
| Kailua to Ostuni | 8,133.84 mi (13,090.15 km) |
| Kailua to Ottaviano | 8,107.32 mi (13,047.47 km) |
| Kailua to Ovada | 7,794.19 mi (12,543.54 km) |
| Kailua to Ozieri | 8,070.57 mi (12,988.32 km) |
| Kailua to Paceco | 8,286.16 mi (13,335.29 km) |
