| Portici to Butzbach | 718.36 mi (1,156.10 km) |
| Portici to Buxtehude | 900.81 mi (1,449.71 km) |
| Portici to Cadolzburg | 619.70 mi (997.31 km) |
| Portici to Calbe | 775.38 mi (1,247.85 km) |
| Portici to Calw | 610.64 mi (982.73 km) |
| Portici to Castrop-Rauxel | 813.07 mi (1,308.51 km) |
| Portici to Celle | 839.90 mi (1,351.68 km) |
| Portici to Cham | 585.98 mi (943.05 km) |
| Portici to Chemnitz | 695.23 mi (1,118.86 km) |
| Portici to Clausthal-Zellerfeld | 782.40 mi (1,259.15 km) |
| Portici to Cloppenburg | 881.96 mi (1,419.38 km) |
| Portici to Coburg | 672.65 mi (1,082.53 km) |
| Portici to Coesfeld | 840.63 mi (1,352.87 km) |
| Portici to Cologne | 783.22 mi (1,260.47 km) |
| Portici to Coswig | 713.52 mi (1,148.30 km) |
