| Gretna to Casamassima | 5,679.35 mi (9,140.03 km) |
| Gretna to Casandrino | 5,562.46 mi (8,951.92 km) |
| Gretna to Casapulla | 5,559.11 mi (8,946.52 km) |
| Gretna to Casarano | 5,769.75 mi (9,285.52 km) |
| Gretna to Casatenovo | 5,183.85 mi (8,342.60 km) |
| Gretna to Casciana Terme | 5,311.66 mi (8,548.29 km) |
| Gretna to Cascina | 5,303.44 mi (8,535.06 km) |
| Gretna to Caselle Torinese | 5,128.55 mi (8,253.60 km) |
| Gretna to Caserta | 5,561.33 mi (8,950.09 km) |
| Gretna to Casier | 5,312.04 mi (8,548.90 km) |
| Gretna to Casorate Primo | 5,183.44 mi (8,341.94 km) |
| Gretna to Casoria | 5,565.89 mi (8,957.44 km) |
| Gretna to Cassano al Ionio | 5,696.89 mi (9,168.25 km) |
| Gretna to Cassano d'Adda | 5,197.93 mi (8,365.26 km) |
| Gretna to Cassano delle Murge | 5,675.31 mi (9,133.54 km) |
