| Helena to Cavaillon | 5,104.22 mi (8,214.45 km) |
| Helena to Cebazat | 4,937.74 mi (7,946.52 km) |
| Helena to Cenon | 4,870.12 mi (7,837.70 km) |
| Helena to Cergy | 4,740.13 mi (7,628.50 km) |
| Helena to Cernay | 4,957.48 mi (7,978.29 km) |
| Helena to Cesson | 4,780.65 mi (7,693.71 km) |
| Helena to Cesson-Sevigne | 4,671.32 mi (7,517.76 km) |
| Helena to Cestas | 4,870.87 mi (7,838.90 km) |
| Helena to Chalette-sur-Loing | 4,813.31 mi (7,746.27 km) |
| Helena to Challans | 4,725.69 mi (7,605.27 km) |
| Helena to Chalon-sur-Saone | 4,942.45 mi (7,954.11 km) |
| Helena to Chalons-en-Champagne | 4,813.59 mi (7,746.73 km) |
| Helena to Chamalieres | 4,939.70 mi (7,949.68 km) |
| Helena to Chambery | 5,039.13 mi (8,109.70 km) |
| Helena to Chambly | 4,739.09 mi (7,626.83 km) |
