| Hopatcong to Butzbach | 3,859.41 mi (6,211.12 km) |
| Hopatcong to Buxtehude | 3,813.03 mi (6,136.48 km) |
| Hopatcong to Cadolzburg | 3,977.37 mi (6,400.96 km) |
| Hopatcong to Calbe | 3,937.57 mi (6,336.91 km) |
| Hopatcong to Calw | 3,913.52 mi (6,298.21 km) |
| Hopatcong to Castrop-Rauxel | 3,774.47 mi (6,074.42 km) |
| Hopatcong to Celle | 3,851.53 mi (6,198.43 km) |
| Hopatcong to Cham | 4,056.06 mi (6,527.59 km) |
| Hopatcong to Chemnitz | 4,014.71 mi (6,461.05 km) |
| Hopatcong to Clausthal-Zellerfeld | 3,885.07 mi (6,252.41 km) |
| Hopatcong to Cloppenburg | 3,767.48 mi (6,063.17 km) |
| Hopatcong to Coburg | 3,956.03 mi (6,366.62 km) |
| Hopatcong to Coesfeld | 3,757.64 mi (6,047.34 km) |
| Hopatcong to Cologne | 3,777.00 mi (6,078.50 km) |
| Hopatcong to Coswig | 4,030.91 mi (6,487.12 km) |
