| Hopatcong to Cortona | 4,229.77 mi (6,807.15 km) |
| Hopatcong to Cosenza | 4,563.88 mi (7,344.86 km) |
| Hopatcong to Cossato | 3,988.02 mi (6,418.10 km) |
| Hopatcong to Costa Volpino | 4,061.79 mi (6,536.83 km) |
| Hopatcong to Creazzo | 4,130.22 mi (6,646.95 km) |
| Hopatcong to Crema | 4,059.39 mi (6,532.95 km) |
| Hopatcong to Cremona | 4,082.06 mi (6,569.43 km) |
| Hopatcong to Crevalcore | 4,143.79 mi (6,668.78 km) |
| Hopatcong to Crispiano | 4,556.35 mi (7,332.74 km) |
| Hopatcong to Crosia | 4,576.25 mi (7,364.76 km) |
| Hopatcong to Crotone | 4,610.61 mi (7,420.05 km) |
| Hopatcong to Cuneo | 3,999.44 mi (6,436.47 km) |
| Hopatcong to Cuorgne | 3,971.46 mi (6,391.45 km) |
| Hopatcong to Cusano Milanino | 4,032.05 mi (6,488.95 km) |
| Hopatcong to Cutro | 4,606.68 mi (7,413.73 km) |
