| Homosassa Springs to Orbetello | 5,082.95 mi (8,180.21 km) |
| Homosassa Springs to Oria | 5,440.17 mi (8,755.11 km) |
| Homosassa Springs to Oristano | 5,029.15 mi (8,093.64 km) |
| Homosassa Springs to Orta Nova | 5,324.64 mi (8,569.18 km) |
| Homosassa Springs to Orte | 5,136.74 mi (8,266.78 km) |
| Homosassa Springs to Ortona | 5,232.71 mi (8,421.23 km) |
| Homosassa Springs to Orvieto | 5,116.52 mi (8,234.24 km) |
| Homosassa Springs to Orzinuovi | 4,943.07 mi (7,955.11 km) |
| Homosassa Springs to Osimo | 5,156.90 mi (8,299.23 km) |
| Homosassa Springs to Ospitaletto | 4,945.19 mi (7,958.52 km) |
| Homosassa Springs to Ostuni | 5,430.20 mi (8,739.06 km) |
| Homosassa Springs to Ottaviano | 5,282.32 mi (8,501.07 km) |
| Homosassa Springs to Ovada | 4,904.96 mi (7,893.77 km) |
| Homosassa Springs to Ozieri | 5,030.35 mi (8,095.56 km) |
| Homosassa Springs to Paceco | 5,277.94 mi (8,494.02 km) |
