| Piqua to Carmona | 4,090.37 mi (6,582.82 km) |
| Piqua to Cartagena | 4,306.17 mi (6,930.11 km) |
| Piqua to Cartama | 4,164.22 mi (6,701.66 km) |
| Piqua to Cartaya | 4,023.71 mi (6,475.54 km) |
| Piqua to Caspe | 4,222.94 mi (6,796.17 km) |
| Piqua to Cassa de la Selva | 4,329.99 mi (6,968.44 km) |
| Piqua to Castalla | 4,285.39 mi (6,896.66 km) |
| Piqua to Castellbisbal | 4,304.92 mi (6,928.10 km) |
| Piqua to Castelldefels | 4,311.59 mi (6,938.83 km) |
| Piqua to Castello de Ampurias | 4,325.81 mi (6,961.71 km) |
| Piqua to Castellon de la Plana | 4,266.16 mi (6,865.73 km) |
| Piqua to Castilleja de la Cuesta | 4,073.23 mi (6,555.23 km) |
| Piqua to Catarroja | 4,269.40 mi (6,870.93 km) |
| Piqua to Catral | 4,294.59 mi (6,911.47 km) |
| Piqua to Caudete | 4,266.86 mi (6,866.85 km) |
