| Gretna to Castrovillari | 5,690.43 mi (9,157.87 km) |
| Gretna to Catania | 5,726.55 mi (9,215.99 km) |
| Gretna to Catanzaro | 5,742.90 mi (9,242.30 km) |
| Gretna to Cattolica | 5,388.44 mi (8,671.86 km) |
| Gretna to Cava de' Tirreni | 5,590.95 mi (8,997.77 km) |
| Gretna to Cavallino | 5,759.61 mi (9,269.20 km) |
| Gretna to Cavarzere | 5,320.33 mi (8,562.25 km) |
| Gretna to Cave | 5,472.46 mi (8,807.08 km) |
| Gretna to Cavriago | 5,268.86 mi (8,479.41 km) |
| Gretna to Cavriglia | 5,349.81 mi (8,609.69 km) |
| Gretna to Cazzago San Martino | 5,218.10 mi (8,397.72 km) |
| Gretna to Ceccano | 5,499.04 mi (8,849.85 km) |
| Gretna to Cecina | 5,314.24 mi (8,552.44 km) |
| Gretna to Cefalu | 5,657.30 mi (9,104.54 km) |
| Gretna to Ceglie Messapico | 5,716.23 mi (9,199.38 km) |
