| Round Lake to Carpentras | 4,418.57 mi (7,111.01 km) |
| Round Lake to Carquefou | 4,032.15 mi (6,489.12 km) |
| Round Lake to Carqueiranne | 4,498.76 mi (7,240.05 km) |
| Round Lake to Carrieres-sous-Poissy | 4,114.78 mi (6,622.11 km) |
| Round Lake to Carrieres-sur-Seine | 4,125.84 mi (6,639.89 km) |
| Round Lake to Carros | 4,516.95 mi (7,269.32 km) |
| Round Lake to Carvin | 4,095.30 mi (6,590.74 km) |
| Round Lake to Castanet-Tolosan | 4,292.64 mi (6,908.34 km) |
| Round Lake to Castelginest | 4,283.17 mi (6,893.10 km) |
| Round Lake to Castelnau-le-Lez | 4,387.93 mi (7,061.70 km) |
| Round Lake to Castelnaudary | 4,319.25 mi (6,951.16 km) |
| Round Lake to Castelsarrasin | 4,256.52 mi (6,850.21 km) |
| Round Lake to Castres | 4,320.85 mi (6,953.73 km) |
| Round Lake to Caudebec-les-Elbeuf | 4,063.47 mi (6,539.52 km) |
| Round Lake to Caudry | 4,125.54 mi (6,639.42 km) |
