| Hopatcong to Castrovillari | 4,541.62 mi (7,309.03 km) |
| Hopatcong to Catania | 4,582.24 mi (7,374.41 km) |
| Hopatcong to Catanzaro | 4,594.99 mi (7,394.92 km) |
| Hopatcong to Cattolica | 4,237.46 mi (6,819.54 km) |
| Hopatcong to Cava de' Tirreni | 4,441.98 mi (7,148.67 km) |
| Hopatcong to Cavallino | 4,609.32 mi (7,417.98 km) |
| Hopatcong to Cavarzere | 4,169.01 mi (6,709.37 km) |
| Hopatcong to Cave | 4,323.16 mi (6,957.45 km) |
| Hopatcong to Cavriago | 4,117.97 mi (6,627.23 km) |
| Hopatcong to Cavriglia | 4,199.48 mi (6,758.40 km) |
| Hopatcong to Cazzago San Martino | 4,066.88 mi (6,545.02 km) |
| Hopatcong to Ceccano | 4,349.81 mi (7,000.34 km) |
| Hopatcong to Cecina | 4,164.45 mi (6,702.03 km) |
| Hopatcong to Cefalu | 4,513.03 mi (7,263.02 km) |
| Hopatcong to Ceglie Messapico | 4,565.96 mi (7,348.20 km) |
