| Flowing Wells to Orbetello | 6,108.02 mi (9,829.91 km) |
| Flowing Wells to Oria | 6,434.00 mi (10,354.53 km) |
| Flowing Wells to Oristano | 6,129.63 mi (9,864.68 km) |
| Flowing Wells to Orta Nova | 6,324.18 mi (10,177.79 km) |
| Flowing Wells to Orte | 6,149.52 mi (9,896.70 km) |
| Flowing Wells to Ortona | 6,226.64 mi (10,020.82 km) |
| Flowing Wells to Orvieto | 6,127.00 mi (9,860.45 km) |
| Flowing Wells to Orzinuovi | 5,920.40 mi (9,527.97 km) |
| Flowing Wells to Osimo | 6,138.05 mi (9,878.23 km) |
| Flowing Wells to Ospitaletto | 5,917.96 mi (9,524.04 km) |
| Flowing Wells to Ostuni | 6,420.18 mi (10,332.28 km) |
| Flowing Wells to Ottaviano | 6,304.55 mi (10,146.19 km) |
| Flowing Wells to Ovada | 5,910.21 mi (9,511.57 km) |
| Flowing Wells to Ozieri | 6,113.67 mi (9,839.01 km) |
| Flowing Wells to Paceco | 6,374.94 mi (10,259.47 km) |
