| Soma to Castelfidardo | 785.94 mi (1,264.86 km) |
| Soma to Castelfiorentino | 912.95 mi (1,469.25 km) |
| Soma to Castelfranco di Sopra | 884.67 mi (1,423.74 km) |
| Soma to Castelfranco di Sotto | 925.12 mi (1,488.84 km) |
| Soma to Castelfranco Emilia | 927.71 mi (1,493.01 km) |
| Soma to Castelfranco Veneto | 913.94 mi (1,470.84 km) |
| Soma to Castellabate | 676.10 mi (1,088.07 km) |
| Soma to Castellammare del Golfo | 798.37 mi (1,284.85 km) |
| Soma to Castellammare di Stabia | 702.53 mi (1,130.62 km) |
| Soma to Castellamonte | 1,099.67 mi (1,769.74 km) |
| Soma to Castellana Grotte | 564.31 mi (908.16 km) |
| Soma to Castellaneta | 574.14 mi (924.00 km) |
| Soma to Castellanza | 1,049.46 mi (1,688.94 km) |
| Soma to Castellarano | 939.71 mi (1,512.32 km) |
| Soma to Castelleone | 1,002.86 mi (1,613.94 km) |
