| Simpsonville to Orbetello | 4,812.45 mi (7,744.89 km) |
| Simpsonville to Oria | 5,166.31 mi (8,314.38 km) |
| Simpsonville to Oristano | 4,776.90 mi (7,687.67 km) |
| Simpsonville to Orta Nova | 5,050.83 mi (8,128.52 km) |
| Simpsonville to Orte | 4,863.94 mi (7,827.75 km) |
| Simpsonville to Ortona | 4,956.60 mi (7,976.88 km) |
| Simpsonville to Orvieto | 4,842.95 mi (7,793.98 km) |
| Simpsonville to Orzinuovi | 4,659.95 mi (7,499.47 km) |
| Simpsonville to Osimo | 4,877.04 mi (7,848.84 km) |
| Simpsonville to Ospitaletto | 4,661.07 mi (7,501.27 km) |
| Simpsonville to Ostuni | 5,155.35 mi (8,296.74 km) |
| Simpsonville to Ottaviano | 5,013.35 mi (8,068.20 km) |
| Simpsonville to Ovada | 4,627.80 mi (7,447.72 km) |
| Simpsonville to Ozieri | 4,773.66 mi (7,682.47 km) |
| Simpsonville to Paceco | 5,027.44 mi (8,090.89 km) |
