| Naperville to Castelletto sopra Ticino | 4,524.22 mi (7,281.04 km) |
| Naperville to Castelli Calepio | 4,577.17 mi (7,366.25 km) |
| Naperville to Castelnovo ne' Monti | 4,646.14 mi (7,477.25 km) |
| Naperville to Castelnuovo Berardenga | 4,735.37 mi (7,620.84 km) |
| Naperville to Castelnuovo di Porto | 4,826.96 mi (7,768.24 km) |
| Naperville to Castelnuovo di Verona | 4,619.12 mi (7,433.76 km) |
| Naperville to Castelnuovo Rangone | 4,662.29 mi (7,503.23 km) |
| Naperville to Castelvetrano | 5,033.81 mi (8,101.13 km) |
| Naperville to Castelvetro di Modena | 4,665.03 mi (7,507.64 km) |
| Naperville to Castenaso | 4,685.04 mi (7,539.84 km) |
| Naperville to Castenedolo | 4,599.30 mi (7,401.87 km) |
| Naperville to Castiglion Fiorentino | 4,751.95 mi (7,647.53 km) |
| Naperville to Castiglione del Lago | 4,765.80 mi (7,669.82 km) |
| Naperville to Castiglione delle Stiviere | 4,610.12 mi (7,419.27 km) |
| Naperville to Castrolibero | 5,100.38 mi (8,208.27 km) |
