| Alamogordo to Orbetello | 5,888.11 mi (9,476.01 km) |
| Alamogordo to Oria | 6,221.29 mi (10,012.20 km) |
| Alamogordo to Oristano | 5,898.92 mi (9,493.40 km) |
| Alamogordo to Orta Nova | 6,109.75 mi (9,832.68 km) |
| Alamogordo to Orte | 5,931.75 mi (9,546.23 km) |
| Alamogordo to Ortona | 6,012.28 mi (9,675.82 km) |
| Alamogordo to Orvieto | 5,909.39 mi (9,510.24 km) |
| Alamogordo to Orzinuovi | 5,706.04 mi (9,182.98 km) |
| Alamogordo to Osimo | 5,924.88 mi (9,535.17 km) |
| Alamogordo to Ospitaletto | 5,704.25 mi (9,180.10 km) |
| Alamogordo to Ostuni | 6,207.94 mi (9,990.72 km) |
| Alamogordo to Ottaviano | 6,086.56 mi (9,795.38 km) |
| Alamogordo to Ovada | 5,691.67 mi (9,159.86 km) |
| Alamogordo to Ozieri | 5,885.33 mi (9,471.52 km) |
| Alamogordo to Paceco | 6,146.42 mi (9,891.71 km) |
