| North Potomac to Cabestany | 4,031.23 mi (6,487.64 km) |
| North Potomac to Cabries | 4,117.99 mi (6,627.26 km) |
| North Potomac to Cachan | 3,831.86 mi (6,166.78 km) |
| North Potomac to Caen | 3,707.94 mi (5,967.35 km) |
| North Potomac to Cagnes-sur-Mer | 4,189.72 mi (6,742.70 km) |
| North Potomac to Cahors | 3,911.23 mi (6,294.52 km) |
| North Potomac to Calais | 3,758.14 mi (6,048.14 km) |
| North Potomac to Caluire-et-Cuire | 4,023.00 mi (6,474.39 km) |
| North Potomac to Cambrai | 3,833.79 mi (6,169.88 km) |
| North Potomac to Canet-en-Roussillon | 4,033.41 mi (6,491.14 km) |
| North Potomac to Cannes | 4,187.30 mi (6,738.81 km) |
| North Potomac to Canteleu | 3,760.65 mi (6,052.19 km) |
| North Potomac to Capbreton | 3,803.19 mi (6,120.65 km) |
| North Potomac to Carcassonne | 3,988.33 mi (6,418.60 km) |
| North Potomac to Carmaux | 3,954.97 mi (6,364.91 km) |
