| Longmont to Cabestany | 5,163.70 mi (8,310.17 km) |
| Longmont to Cabries | 5,220.52 mi (8,401.62 km) |
| Longmont to Cachan | 4,868.32 mi (7,834.81 km) |
| Longmont to Caen | 4,755.71 mi (7,653.58 km) |
| Longmont to Cagnes-sur-Mer | 5,275.03 mi (8,489.33 km) |
| Longmont to Cahors | 5,027.20 mi (8,090.50 km) |
| Longmont to Calais | 4,758.35 mi (7,657.82 km) |
| Longmont to Caluire-et-Cuire | 5,092.32 mi (8,195.29 km) |
| Longmont to Cambrai | 4,838.93 mi (7,787.50 km) |
| Longmont to Canet-en-Roussillon | 5,165.02 mi (8,312.30 km) |
| Longmont to Cannes | 5,275.42 mi (8,489.97 km) |
| Longmont to Canteleu | 4,794.12 mi (7,715.39 km) |
| Longmont to Capbreton | 4,951.87 mi (7,969.26 km) |
| Longmont to Carcassonne | 5,117.08 mi (8,235.15 km) |
| Longmont to Carmaux | 5,072.09 mi (8,162.74 km) |
