| Sumner to Cabestany | 5,381.21 mi (8,660.23 km) |
| Sumner to Cabries | 5,406.37 mi (8,700.72 km) |
| Sumner to Cachan | 5,019.22 mi (8,077.65 km) |
| Sumner to Caen | 4,924.51 mi (7,925.24 km) |
| Sumner to Cagnes-sur-Mer | 5,441.47 mi (8,757.20 km) |
| Sumner to Cahors | 5,238.10 mi (8,429.90 km) |
| Sumner to Calais | 4,886.52 mi (7,864.09 km) |
| Sumner to Caluire-et-Cuire | 5,256.44 mi (8,459.42 km) |
| Sumner to Cambrai | 4,965.24 mi (7,990.79 km) |
| Sumner to Canet-en-Roussillon | 5,381.65 mi (8,660.92 km) |
| Sumner to Cannes | 5,444.42 mi (8,761.95 km) |
| Sumner to Canteleu | 4,947.82 mi (7,962.75 km) |
| Sumner to Capbreton | 5,198.26 mi (8,365.79 km) |
| Sumner to Carcassonne | 5,334.07 mi (8,584.35 km) |
| Sumner to Carmaux | 5,281.11 mi (8,499.12 km) |
