| Winter Haven to Orbetello | 5,079.22 mi (8,174.22 km) |
| Winter Haven to Oria | 5,436.92 mi (8,749.87 km) |
| Winter Haven to Oristano | 5,021.19 mi (8,080.82 km) |
| Winter Haven to Orta Nova | 5,321.48 mi (8,564.10 km) |
| Winter Haven to Orte | 5,133.52 mi (8,261.61 km) |
| Winter Haven to Ortona | 5,230.21 mi (8,417.21 km) |
| Winter Haven to Orvieto | 5,113.51 mi (8,229.40 km) |
| Winter Haven to Orzinuovi | 4,942.60 mi (7,954.35 km) |
| Winter Haven to Osimo | 5,155.40 mi (8,296.82 km) |
| Winter Haven to Ospitaletto | 4,944.98 mi (7,958.17 km) |
| Winter Haven to Ostuni | 5,427.20 mi (8,734.23 km) |
| Winter Haven to Ottaviano | 5,278.03 mi (8,494.17 km) |
| Winter Haven to Ovada | 4,903.05 mi (7,890.69 km) |
| Winter Haven to Ozieri | 5,023.40 mi (8,084.38 km) |
| Winter Haven to Paceco | 5,269.31 mi (8,480.13 km) |
