| Piqua to Celano | 4,780.96 mi (7,694.22 km) |
| Piqua to Cento | 4,582.77 mi (7,375.25 km) |
| Piqua to Cepagatti | 4,790.67 mi (7,709.83 km) |
| Piqua to Ceprano | 4,801.03 mi (7,726.51 km) |
| Piqua to Cercola | 4,863.90 mi (7,827.69 km) |
| Piqua to Cerea | 4,562.15 mi (7,342.08 km) |
| Piqua to Cerese | 4,548.91 mi (7,320.77 km) |
| Piqua to Cerignola | 4,911.77 mi (7,904.74 km) |
| Piqua to Cermenate | 4,456.60 mi (7,172.20 km) |
| Piqua to Cernusco sul Naviglio | 4,473.58 mi (7,199.54 km) |
| Piqua to Cerreto Guidi | 4,603.58 mi (7,408.75 km) |
| Piqua to Cerro Maggiore | 4,454.84 mi (7,169.37 km) |
| Piqua to Certaldo | 4,618.59 mi (7,432.90 km) |
| Piqua to Cerveteri | 4,723.58 mi (7,601.87 km) |
| Piqua to Cervia | 4,644.92 mi (7,475.27 km) |
