| Langley Park to Corato | 4,677.40 mi (7,527.55 km) |
| Langley Park to Corbetta | 4,202.48 mi (6,763.24 km) |
| Langley Park to Corciano | 4,426.01 mi (7,122.97 km) |
| Langley Park to Cordenons | 4,346.27 mi (6,994.65 km) |
| Langley Park to Cori | 4,506.09 mi (7,251.86 km) |
| Langley Park to Coriano | 4,410.85 mi (7,098.57 km) |
| Langley Park to Corigliano Calabro | 4,741.32 mi (7,630.42 km) |
| Langley Park to Corleone | 4,663.45 mi (7,505.10 km) |
| Langley Park to Cormano | 4,210.57 mi (6,776.27 km) |
| Langley Park to Cornaredo | 4,206.44 mi (6,769.61 km) |
| Langley Park to Cornate d'Adda | 4,220.24 mi (6,791.82 km) |
| Langley Park to Cornedo Vicentino | 4,301.58 mi (6,922.73 km) |
| Langley Park to Correggio | 4,305.37 mi (6,928.83 km) |
| Langley Park to Corridonia | 4,475.46 mi (7,202.55 km) |
| Langley Park to Corsico | 4,212.15 mi (6,778.80 km) |
