| North Potomac to Castrovillari | 4,726.24 mi (7,606.15 km) |
| North Potomac to Catania | 4,765.23 mi (7,668.90 km) |
| North Potomac to Catanzaro | 4,779.25 mi (7,691.45 km) |
| North Potomac to Cattolica | 4,423.23 mi (7,118.50 km) |
| North Potomac to Cava de' Tirreni | 4,626.67 mi (7,445.90 km) |
| North Potomac to Cavallino | 4,794.65 mi (7,716.24 km) |
| North Potomac to Cavarzere | 4,355.13 mi (7,008.90 km) |
| North Potomac to Cave | 4,507.99 mi (7,254.91 km) |
| North Potomac to Cavriago | 4,303.67 mi (6,926.09 km) |
| North Potomac to Cavriglia | 4,384.82 mi (7,056.69 km) |
| North Potomac to Cazzago San Martino | 4,252.87 mi (6,844.33 km) |
| North Potomac to Ceccano | 4,534.60 mi (7,297.74 km) |
| North Potomac to Cecina | 4,349.50 mi (6,999.85 km) |
| North Potomac to Cefalu | 4,696.00 mi (7,557.48 km) |
| North Potomac to Ceglie Messapico | 4,751.28 mi (7,646.44 km) |
