| Olney to Celano | 4,516.38 mi (7,268.41 km) |
| Olney to Cento | 4,325.53 mi (6,961.27 km) |
| Olney to Cepagatti | 4,528.46 mi (7,287.86 km) |
| Olney to Ceprano | 4,533.97 mi (7,296.73 km) |
| Olney to Cercola | 4,595.72 mi (7,396.09 km) |
| Olney to Cerea | 4,307.03 mi (6,931.49 km) |
| Olney to Cerese | 4,292.09 mi (6,907.46 km) |
| Olney to Cerignola | 4,648.85 mi (7,481.61 km) |
| Olney to Cermenate | 4,199.58 mi (6,758.58 km) |
| Olney to Cernusco sul Naviglio | 4,216.17 mi (6,785.26 km) |
| Olney to Cerreto Guidi | 4,340.94 mi (6,986.06 km) |
| Olney to Cerro Maggiore | 4,197.07 mi (6,754.53 km) |
| Olney to Certaldo | 4,355.25 mi (7,009.09 km) |
| Olney to Cerveteri | 4,455.43 mi (7,170.32 km) |
| Olney to Cervia | 4,387.69 mi (7,061.30 km) |
