| Florida Ridge to Orbetello | 5,036.24 mi (8,105.05 km) |
| Florida Ridge to Oria | 5,394.27 mi (8,681.24 km) |
| Florida Ridge to Oristano | 4,974.08 mi (8,005.01 km) |
| Florida Ridge to Orta Nova | 5,278.98 mi (8,495.69 km) |
| Florida Ridge to Orte | 5,091.02 mi (8,193.21 km) |
| Florida Ridge to Ortona | 5,188.39 mi (8,349.91 km) |
| Florida Ridge to Orvieto | 5,071.22 mi (8,161.34 km) |
| Florida Ridge to Orzinuovi | 4,902.94 mi (7,890.52 km) |
| Florida Ridge to Osimo | 5,114.62 mi (8,231.18 km) |
| Florida Ridge to Ospitaletto | 4,905.57 mi (7,894.75 km) |
| Florida Ridge to Ostuni | 5,384.80 mi (8,666.00 km) |
| Florida Ridge to Ottaviano | 5,234.42 mi (8,423.98 km) |
| Florida Ridge to Ovada | 4,861.94 mi (7,824.54 km) |
| Florida Ridge to Ozieri | 4,977.28 mi (8,010.16 km) |
| Florida Ridge to Paceco | 5,221.48 mi (8,403.16 km) |
