| Fairmount to Orbetello | 4,216.23 mi (6,785.37 km) |
| Fairmount to Oria | 4,564.90 mi (7,346.50 km) |
| Fairmount to Oristano | 4,198.96 mi (6,757.57 km) |
| Fairmount to Orta Nova | 4,450.09 mi (7,161.74 km) |
| Fairmount to Orte | 4,265.22 mi (6,864.20 km) |
| Fairmount to Ortona | 4,354.28 mi (7,007.53 km) |
| Fairmount to Orvieto | 4,243.64 mi (6,829.48 km) |
| Fairmount to Orzinuovi | 4,052.86 mi (6,522.44 km) |
| Fairmount to Osimo | 4,271.73 mi (6,874.68 km) |
| Fairmount to Ospitaletto | 4,053.06 mi (6,522.77 km) |
| Fairmount to Ostuni | 4,553.10 mi (7,327.50 km) |
| Fairmount to Ottaviano | 4,417.34 mi (7,109.02 km) |
| Fairmount to Ovada | 4,026.40 mi (6,479.87 km) |
| Fairmount to Ozieri | 4,191.25 mi (6,745.17 km) |
| Fairmount to Paceco | 4,449.42 mi (7,160.66 km) |
