| Gretna to Castelfidardo | 5,441.04 mi (8,756.50 km) |
| Gretna to Castelfiorentino | 5,324.45 mi (8,568.87 km) |
| Gretna to Castelfranco di Sopra | 5,349.44 mi (8,609.09 km) |
| Gretna to Castelfranco di Sotto | 5,311.62 mi (8,548.22 km) |
| Gretna to Castelfranco Emilia | 5,294.67 mi (8,520.95 km) |
| Gretna to Castelfranco Veneto | 5,296.06 mi (8,523.18 km) |
| Gretna to Castellabate | 5,617.64 mi (9,040.72 km) |
| Gretna to Castellammare del Golfo | 5,604.85 mi (9,020.14 km) |
| Gretna to Castellammare di Stabia | 5,581.37 mi (8,982.35 km) |
| Gretna to Castellamonte | 5,125.03 mi (8,247.94 km) |
| Gretna to Castellana Grotte | 5,692.79 mi (9,161.66 km) |
| Gretna to Castellaneta | 5,692.06 mi (9,160.49 km) |
| Gretna to Castellanza | 5,168.84 mi (8,318.44 km) |
| Gretna to Castellarano | 5,284.07 mi (8,503.89 km) |
| Gretna to Castelleone | 5,216.09 mi (8,394.48 km) |
