| Alpena to Castelletto sopra Ticino | 4,195.57 mi (6,752.12 km) |
| Alpena to Castelli Calepio | 4,248.25 mi (6,836.90 km) |
| Alpena to Castelnovo ne' Monti | 4,317.67 mi (6,948.62 km) |
| Alpena to Castelnuovo Berardenga | 4,407.14 mi (7,092.61 km) |
| Alpena to Castelnuovo di Porto | 4,499.08 mi (7,240.57 km) |
| Alpena to Castelnuovo di Verona | 4,290.10 mi (6,904.24 km) |
| Alpena to Castelnuovo Rangone | 4,333.62 mi (6,974.28 km) |
| Alpena to Castelvetrano | 4,708.92 mi (7,578.28 km) |
| Alpena to Castelvetro di Modena | 4,336.38 mi (6,978.72 km) |
| Alpena to Castenaso | 4,356.25 mi (7,010.71 km) |
| Alpena to Castenedolo | 4,270.37 mi (6,872.49 km) |
| Alpena to Castiglion Fiorentino | 4,423.60 mi (7,119.10 km) |
| Alpena to Castiglione del Lago | 4,437.53 mi (7,141.51 km) |
| Alpena to Castiglione delle Stiviere | 4,281.17 mi (6,889.87 km) |
| Alpena to Castrolibero | 4,772.76 mi (7,681.01 km) |
