| Seaham to Castelfidardo | 1,030.24 mi (1,658.02 km) |
| Seaham to Castelfiorentino | 951.79 mi (1,531.76 km) |
| Seaham to Castelfranco di Sopra | 965.91 mi (1,554.48 km) |
| Seaham to Castelfranco di Sotto | 940.30 mi (1,513.26 km) |
| Seaham to Castelfranco Emilia | 895.80 mi (1,441.65 km) |
| Seaham to Castelfranco Veneto | 860.66 mi (1,385.10 km) |
| Seaham to Castellabate | 1,254.14 mi (2,018.34 km) |
| Seaham to Castellammare del Golfo | 1,338.88 mi (2,154.73 km) |
| Seaham to Castellammare di Stabia | 1,216.70 mi (1,958.08 km) |
| Seaham to Castellamonte | 765.37 mi (1,231.74 km) |
| Seaham to Castellana Grotte | 1,282.71 mi (2,064.33 km) |
| Seaham to Castellaneta | 1,289.96 mi (2,076.00 km) |
| Seaham to Castellanza | 779.93 mi (1,255.18 km) |
| Seaham to Castellarano | 890.29 mi (1,432.78 km) |
| Seaham to Castelleone | 820.87 mi (1,321.07 km) |
