| Opmeer to Castelletto sopra Ticino | 510.17 mi (821.04 km) |
| Opmeer to Castelli Calepio | 536.72 mi (863.77 km) |
| Opmeer to Castelnovo ne' Monti | 622.72 mi (1,002.18 km) |
| Opmeer to Castelnuovo Berardenga | 712.95 mi (1,147.39 km) |
| Opmeer to Castelnuovo di Porto | 809.89 mi (1,303.39 km) |
| Opmeer to Castelnuovo di Verona | 566.50 mi (911.69 km) |
| Opmeer to Castelnuovo Rangone | 625.39 mi (1,006.46 km) |
| Opmeer to Castelvetrano | 1,104.02 mi (1,776.75 km) |
| Opmeer to Castelvetro di Modena | 628.88 mi (1,012.09 km) |
| Opmeer to Castenaso | 638.90 mi (1,028.22 km) |
| Opmeer to Castenedolo | 554.66 mi (892.63 km) |
| Opmeer to Castiglion Fiorentino | 721.42 mi (1,161.02 km) |
| Opmeer to Castiglione del Lago | 737.02 mi (1,186.12 km) |
| Opmeer to Castiglione delle Stiviere | 563.13 mi (906.26 km) |
| Opmeer to Castrolibero | 1,067.91 mi (1,718.64 km) |
