| Hertford to Castelletto sopra Ticino | 577.06 mi (928.69 km) |
| Hertford to Castelli Calepio | 622.06 mi (1,001.11 km) |
| Hertford to Castelnovo ne' Monti | 700.39 mi (1,127.16 km) |
| Hertford to Castelnuovo Berardenga | 793.29 mi (1,276.67 km) |
| Hertford to Castelnuovo di Porto | 890.52 mi (1,433.16 km) |
| Hertford to Castelnuovo di Verona | 661.08 mi (1,063.91 km) |
| Hertford to Castelnuovo Rangone | 711.35 mi (1,144.80 km) |
| Hertford to Castelvetrano | 1,158.04 mi (1,863.68 km) |
| Hertford to Castelvetro di Modena | 714.49 mi (1,149.85 km) |
| Hertford to Castenaso | 731.09 mi (1,176.58 km) |
| Hertford to Castenedolo | 643.42 mi (1,035.49 km) |
| Hertford to Castiglion Fiorentino | 806.59 mi (1,298.08 km) |
| Hertford to Castiglione del Lago | 821.68 mi (1,322.36 km) |
| Hertford to Castiglione delle Stiviere | 653.74 mi (1,052.09 km) |
| Hertford to Castrolibero | 1,162.50 mi (1,870.87 km) |
