| Alpena to Castelfidardo | 4,481.95 mi (7,213.00 km) |
| Alpena to Castelfiorentino | 4,375.16 mi (7,041.14 km) |
| Alpena to Castelfranco di Sopra | 4,397.43 mi (7,076.98 km) |
| Alpena to Castelfranco di Sotto | 4,362.37 mi (7,020.55 km) |
| Alpena to Castelfranco Emilia | 4,336.31 mi (6,978.61 km) |
| Alpena to Castelfranco Veneto | 4,325.15 mi (6,960.65 km) |
| Alpena to Castellabate | 4,679.13 mi (7,530.33 km) |
| Alpena to Castellammare del Golfo | 4,697.04 mi (7,559.15 km) |
| Alpena to Castellammare di Stabia | 4,641.56 mi (7,469.87 km) |
| Alpena to Castellamonte | 4,172.98 mi (6,715.77 km) |
| Alpena to Castellana Grotte | 4,738.70 mi (7,626.20 km) |
| Alpena to Castellaneta | 4,741.10 mi (7,630.06 km) |
| Alpena to Castellanza | 4,210.05 mi (6,775.42 km) |
| Alpena to Castellarano | 4,327.06 mi (6,963.73 km) |
| Alpena to Castelleone | 4,256.78 mi (6,850.63 km) |
