| South Portland to Cavaillon | 3,620.46 mi (5,826.56 km) |
| South Portland to Cebazat | 3,473.64 mi (5,590.29 km) |
| South Portland to Cenon | 3,342.58 mi (5,379.36 km) |
| South Portland to Cergy | 3,338.98 mi (5,373.58 km) |
| South Portland to Cernay | 3,587.52 mi (5,773.55 km) |
| South Portland to Cesson | 3,374.18 mi (5,430.22 km) |
| South Portland to Cesson-Sevigne | 3,207.25 mi (5,161.57 km) |
| South Portland to Cestas | 3,339.15 mi (5,373.85 km) |
| South Portland to Chalette-sur-Loing | 3,395.12 mi (5,463.92 km) |
| South Portland to Challans | 3,228.24 mi (5,195.35 km) |
| South Portland to Chalon-sur-Saone | 3,520.64 mi (5,665.93 km) |
| South Portland to Chalons-en-Champagne | 3,437.03 mi (5,531.36 km) |
| South Portland to Chamalieres | 3,473.93 mi (5,590.76 km) |
| South Portland to Chambery | 3,603.24 mi (5,798.85 km) |
| South Portland to Chambly | 3,343.25 mi (5,380.44 km) |
