| North Potomac to Butzbach | 4,046.59 mi (6,512.35 km) |
| North Potomac to Buxtehude | 4,000.30 mi (6,437.86 km) |
| North Potomac to Cadolzburg | 4,164.50 mi (6,702.12 km) |
| North Potomac to Calbe | 4,124.89 mi (6,638.37 km) |
| North Potomac to Calw | 4,100.37 mi (6,598.91 km) |
| North Potomac to Castrop-Rauxel | 3,961.73 mi (6,375.79 km) |
| North Potomac to Celle | 4,038.84 mi (6,499.88 km) |
| North Potomac to Cham | 4,243.24 mi (6,828.84 km) |
| North Potomac to Chemnitz | 4,202.02 mi (6,762.51 km) |
| North Potomac to Clausthal-Zellerfeld | 4,072.39 mi (6,553.87 km) |
| North Potomac to Cloppenburg | 3,954.80 mi (6,364.63 km) |
| North Potomac to Coburg | 4,143.27 mi (6,667.95 km) |
| North Potomac to Coesfeld | 3,944.93 mi (6,348.75 km) |
| North Potomac to Cologne | 3,964.18 mi (6,379.74 km) |
| North Potomac to Coswig | 4,218.23 mi (6,788.59 km) |
