| Seia to Castelfidardo | 1,108.86 mi (1,784.53 km) |
| Seia to Castelfiorentino | 980.98 mi (1,578.74 km) |
| Seia to Castelfranco di Sopra | 1,010.58 mi (1,626.37 km) |
| Seia to Castelfranco di Sotto | 971.05 mi (1,562.75 km) |
| Seia to Castelfranco Emilia | 995.28 mi (1,601.74 km) |
| Seia to Castelfranco Veneto | 1,052.34 mi (1,693.58 km) |
| Seia to Castellabate | 1,189.69 mi (1,914.61 km) |
| Seia to Castellammare del Golfo | 1,111.47 mi (1,788.74 km) |
| Seia to Castellammare di Stabia | 1,161.49 mi (1,869.24 km) |
| Seia to Castellamonte | 850.31 mi (1,368.44 km) |
| Seia to Castellana Grotte | 1,299.61 mi (2,091.52 km) |
| Seia to Castellaneta | 1,289.63 mi (2,075.46 km) |
| Seia to Castellanza | 910.04 mi (1,464.57 km) |
| Seia to Castellarano | 981.86 mi (1,580.14 km) |
| Seia to Castelleone | 944.03 mi (1,519.27 km) |
