| Oneonta to Cortona | 4,189.67 mi (6,742.62 km) |
| Oneonta to Cosenza | 4,526.79 mi (7,285.17 km) |
| Oneonta to Cossato | 3,946.69 mi (6,351.59 km) |
| Oneonta to Costa Volpino | 4,018.70 mi (6,467.48 km) |
| Oneonta to Creazzo | 4,086.69 mi (6,576.90 km) |
| Oneonta to Crema | 4,017.38 mi (6,465.35 km) |
| Oneonta to Cremona | 4,040.21 mi (6,502.09 km) |
| Oneonta to Crevalcore | 4,101.87 mi (6,601.33 km) |
| Oneonta to Crispiano | 4,516.44 mi (7,268.51 km) |
| Oneonta to Crosia | 4,538.32 mi (7,303.71 km) |
| Oneonta to Crotone | 4,573.12 mi (7,359.73 km) |
| Oneonta to Cuneo | 3,960.64 mi (6,374.03 km) |
| Oneonta to Cuorgne | 3,930.79 mi (6,326.00 km) |
| Oneonta to Cusano Milanino | 3,990.06 mi (6,421.38 km) |
| Oneonta to Cutro | 4,569.38 mi (7,353.71 km) |
