| Hopatcong to Collegno | 3,978.08 mi (6,402.10 km) |
| Hopatcong to Cologno al Serio | 4,052.98 mi (6,522.64 km) |
| Hopatcong to Cologno Monzese | 4,036.80 mi (6,496.60 km) |
| Hopatcong to Colorno | 4,103.70 mi (6,604.26 km) |
| Hopatcong to Comacchio | 4,188.39 mi (6,740.56 km) |
| Hopatcong to Comiso | 4,581.49 mi (7,373.20 km) |
| Hopatcong to Como | 4,019.46 mi (6,468.69 km) |
| Hopatcong to Concordia Sagittaria | 4,179.65 mi (6,726.50 km) |
| Hopatcong to Concorezzo | 4,037.26 mi (6,497.34 km) |
| Hopatcong to Conegliano | 4,152.43 mi (6,682.70 km) |
| Hopatcong to Conselice | 4,179.82 mi (6,726.77 km) |
| Hopatcong to Conselve | 4,156.62 mi (6,689.43 km) |
| Hopatcong to Conversano | 4,537.08 mi (7,301.73 km) |
| Hopatcong to Copertino | 4,604.79 mi (7,410.70 km) |
| Hopatcong to Copparo | 4,166.62 mi (6,705.53 km) |
