| Greenock to Castelletto sopra Ticino | 914.22 mi (1,471.30 km) |
| Greenock to Castelli Calepio | 954.42 mi (1,535.99 km) |
| Greenock to Castelnovo ne' Monti | 1,036.13 mi (1,667.49 km) |
| Greenock to Castelnuovo Berardenga | 1,129.09 mi (1,817.10 km) |
| Greenock to Castelnuovo di Porto | 1,226.93 mi (1,974.55 km) |
| Greenock to Castelnuovo di Verona | 990.63 mi (1,594.27 km) |
| Greenock to Castelnuovo Rangone | 1,044.60 mi (1,681.12 km) |
| Greenock to Castelvetrano | 1,501.13 mi (2,415.84 km) |
| Greenock to Castelvetro di Modena | 1,047.89 mi (1,686.41 km) |
| Greenock to Castenaso | 1,062.36 mi (1,709.70 km) |
| Greenock to Castenedolo | 974.89 mi (1,568.93 km) |
| Greenock to Castiglion Fiorentino | 1,140.99 mi (1,836.24 km) |
| Greenock to Castiglione del Lago | 1,156.36 mi (1,860.98 km) |
| Greenock to Castiglione delle Stiviere | 984.68 mi (1,584.69 km) |
| Greenock to Castrolibero | 1,495.61 mi (2,406.95 km) |
