| Longmont to Carpentras | 5,179.77 mi (8,336.03 km) |
| Longmont to Carquefou | 4,794.00 mi (7,715.20 km) |
| Longmont to Carqueiranne | 5,262.41 mi (8,469.03 km) |
| Longmont to Carrieres-sous-Poissy | 4,851.19 mi (7,807.23 km) |
| Longmont to Carrieres-sur-Seine | 4,861.61 mi (7,824.00 km) |
| Longmont to Carros | 5,271.52 mi (8,483.69 km) |
| Longmont to Carvin | 4,815.60 mi (7,749.96 km) |
| Longmont to Castanet-Tolosan | 5,070.82 mi (8,160.69 km) |
| Longmont to Castelginest | 5,060.39 mi (8,143.91 km) |
| Longmont to Castelnau-le-Lez | 5,156.40 mi (8,298.42 km) |
| Longmont to Castelnaudary | 5,097.09 mi (8,202.97 km) |
| Longmont to Castelsarrasin | 5,032.58 mi (8,099.15 km) |
| Longmont to Castres | 5,095.73 mi (8,200.78 km) |
| Longmont to Caudebec-les-Elbeuf | 4,800.90 mi (7,726.30 km) |
| Longmont to Caudry | 4,847.21 mi (7,800.84 km) |
