| Viterbo to Castelfidardo | 102.65 mi (165.20 km) |
| Viterbo to Castelfiorentino | 99.83 mi (160.66 km) |
| Viterbo to Castelfranco di Sopra | 87.70 mi (141.15 km) |
| Viterbo to Castelfranco di Sotto | 111.85 mi (180.01 km) |
| Viterbo to Castelfranco Emilia | 159.44 mi (256.60 km) |
| Viterbo to Castelfranco Veneto | 224.58 mi (361.43 km) |
| Viterbo to Castellabate | 208.99 mi (336.34 km) |
| Viterbo to Castellammare del Golfo | 306.22 mi (492.81 km) |
| Viterbo to Castellammare di Stabia | 171.10 mi (275.36 km) |
| Viterbo to Castellamonte | 299.47 mi (481.95 km) |
| Viterbo to Castellana Grotte | 282.01 mi (453.85 km) |
| Viterbo to Castellaneta | 278.53 mi (448.25 km) |
| Viterbo to Castellanza | 272.30 mi (438.22 km) |
| Viterbo to Castellarano | 162.51 mi (261.54 km) |
| Viterbo to Castelleone | 230.52 mi (370.98 km) |
