| Mesa to Orbetello | 6,073.63 mi (9,774.56 km) |
| Mesa to Oria | 6,396.57 mi (10,294.29 km) |
| Mesa to Oristano | 6,099.73 mi (9,816.56 km) |
| Mesa to Orta Nova | 6,287.49 mi (10,118.74 km) |
| Mesa to Orte | 6,114.26 mi (9,839.94 km) |
| Mesa to Ortona | 6,190.00 mi (9,961.84 km) |
| Mesa to Orvieto | 6,091.68 mi (9,803.61 km) |
| Mesa to Orzinuovi | 5,883.97 mi (9,469.34 km) |
| Mesa to Osimo | 6,101.00 mi (9,818.61 km) |
| Mesa to Ospitaletto | 5,881.28 mi (9,465.01 km) |
| Mesa to Ostuni | 6,382.58 mi (10,271.77 km) |
| Mesa to Ottaviano | 6,269.25 mi (10,089.39 km) |
| Mesa to Ovada | 5,875.42 mi (9,455.57 km) |
| Mesa to Ozieri | 6,082.77 mi (9,789.27 km) |
| Mesa to Paceco | 6,343.92 mi (10,209.55 km) |
