| Summerfield to Orbetello | 4,401.41 mi (7,083.39 km) |
| Summerfield to Oria | 4,754.46 mi (7,651.56 km) |
| Summerfield to Oristano | 4,369.92 mi (7,032.71 km) |
| Summerfield to Orta Nova | 4,639.05 mi (7,465.83 km) |
| Summerfield to Orte | 4,452.45 mi (7,165.52 km) |
| Summerfield to Ortona | 4,544.50 mi (7,313.67 km) |
| Summerfield to Orvieto | 4,431.34 mi (7,131.56 km) |
| Summerfield to Orzinuovi | 4,246.99 mi (6,834.87 km) |
| Summerfield to Osimo | 4,464.42 mi (7,184.80 km) |
| Summerfield to Ospitaletto | 4,247.98 mi (6,836.46 km) |
| Summerfield to Ostuni | 4,743.34 mi (7,633.67 km) |
| Summerfield to Ottaviano | 4,602.44 mi (7,406.92 km) |
| Summerfield to Ovada | 4,215.73 mi (6,784.56 km) |
| Summerfield to Ozieri | 4,365.60 mi (7,025.75 km) |
| Summerfield to Paceco | 4,620.62 mi (7,436.18 km) |
