| Piqua to Castrovillari | 4,985.36 mi (8,023.16 km) |
| Piqua to Catania | 5,036.35 mi (8,105.23 km) |
| Piqua to Catanzaro | 5,041.23 mi (8,113.07 km) |
| Piqua to Cattolica | 4,671.80 mi (7,518.53 km) |
| Piqua to Cava de' Tirreni | 4,885.46 mi (7,862.39 km) |
| Piqua to Cavallino | 5,046.98 mi (8,122.33 km) |
| Piqua to Cavarzere | 4,599.57 mi (7,402.29 km) |
| Piqua to Cave | 4,765.84 mi (7,669.87 km) |
| Piqua to Cavriago | 4,553.38 mi (7,327.96 km) |
| Piqua to Cavriglia | 4,638.11 mi (7,464.31 km) |
| Piqua to Cazzago San Martino | 4,499.37 mi (7,241.03 km) |
| Piqua to Ceccano | 4,792.68 mi (7,713.07 km) |
| Piqua to Cecina | 4,605.72 mi (7,412.19 km) |
| Piqua to Cefalu | 4,967.41 mi (7,994.28 km) |
| Piqua to Ceglie Messapico | 5,003.85 mi (8,052.93 km) |
