| Oneonta to Orbetello | 4,187.34 mi (6,738.87 km) |
| Oneonta to Oria | 4,537.50 mi (7,302.40 km) |
| Oneonta to Oristano | 4,165.88 mi (6,704.34 km) |
| Oneonta to Orta Nova | 4,422.47 mi (7,117.27 km) |
| Oneonta to Orte | 4,236.98 mi (6,818.76 km) |
| Oneonta to Ortona | 4,327.01 mi (6,963.65 km) |
| Oneonta to Orvieto | 4,215.54 mi (6,784.25 km) |
| Oneonta to Orzinuovi | 4,026.71 mi (6,480.37 km) |
| Oneonta to Osimo | 4,245.21 mi (6,832.01 km) |
| Oneonta to Ospitaletto | 4,027.17 mi (6,481.11 km) |
| Oneonta to Ostuni | 4,525.91 mi (7,283.75 km) |
| Oneonta to Ottaviano | 4,388.51 mi (7,062.62 km) |
| Oneonta to Ovada | 3,998.72 mi (6,435.31 km) |
| Oneonta to Ozieri | 4,159.14 mi (6,693.49 km) |
| Oneonta to Paceco | 4,416.52 mi (7,107.71 km) |
