| Boise to Cabestany | 5,388.92 mi (8,672.64 km) |
| Boise to Cabries | 5,426.94 mi (8,733.81 km) |
| Boise to Cachan | 5,050.65 mi (8,128.23 km) |
| Boise to Caen | 4,948.09 mi (7,963.19 km) |
| Boise to Cagnes-sur-Mer | 5,470.01 mi (8,803.14 km) |
| Boise to Cahors | 5,247.38 mi (8,444.85 km) |
| Boise to Calais | 4,925.82 mi (7,927.34 km) |
| Boise to Caluire-et-Cuire | 5,284.49 mi (8,504.57 km) |
| Boise to Cambrai | 5,005.91 mi (8,056.24 km) |
| Boise to Canet-en-Roussillon | 5,389.72 mi (8,673.92 km) |
| Boise to Cannes | 5,471.97 mi (8,806.29 km) |
| Boise to Canteleu | 4,977.57 mi (8,010.62 km) |
| Boise to Capbreton | 5,192.97 mi (8,357.28 km) |
| Boise to Carcassonne | 5,341.64 mi (8,596.54 km) |
| Boise to Carmaux | 5,291.47 mi (8,515.80 km) |
