| Piqua to Carpentras | 4,347.75 mi (6,997.03 km) |
| Piqua to Carquefou | 3,963.67 mi (6,378.92 km) |
| Piqua to Carqueiranne | 4,426.08 mi (7,123.09 km) |
| Piqua to Carrieres-sous-Poissy | 4,059.13 mi (6,532.53 km) |
| Piqua to Carrieres-sur-Seine | 4,070.41 mi (6,550.70 km) |
| Piqua to Carros | 4,449.00 mi (7,159.97 km) |
| Piqua to Carvin | 4,047.85 mi (6,514.39 km) |
| Piqua to Castanet-Tolosan | 4,213.24 mi (6,780.55 km) |
| Piqua to Castelginest | 4,204.37 mi (6,766.28 km) |
| Piqua to Castelnau-le-Lez | 4,313.35 mi (6,941.67 km) |
| Piqua to Castelnaudary | 4,239.87 mi (6,823.40 km) |
| Piqua to Castelsarrasin | 4,178.56 mi (6,724.73 km) |
| Piqua to Castres | 4,243.13 mi (6,828.66 km) |
| Piqua to Caudebec-les-Elbeuf | 4,007.68 mi (6,449.74 km) |
| Piqua to Caudry | 4,077.18 mi (6,561.59 km) |
