| Boulder to Chaudfontaine | 4,914.29 mi (7,908.78 km) |
| Boulder to Chaumont-Gistoux | 4,878.52 mi (7,851.22 km) |
| Boulder to Chimay | 4,894.09 mi (7,876.27 km) |
| Boulder to Ciney | 4,909.29 mi (7,900.73 km) |
| Boulder to Colfontaine | 4,862.53 mi (7,825.49 km) |
| Boulder to Courcelles | 4,877.91 mi (7,850.23 km) |
| Boulder to Court-Saint-Etienne | 4,876.50 mi (7,847.97 km) |
| Boulder to Couvin | 4,899.73 mi (7,885.35 km) |
| Boulder to Damme | 4,806.29 mi (7,734.98 km) |
| Boulder to De Haan | 4,796.91 mi (7,719.88 km) |
| Boulder to De Panne | 4,789.46 mi (7,707.89 km) |
| Boulder to De Pinte | 4,829.54 mi (7,772.40 km) |
| Boulder to Deerlijk | 4,826.00 mi (7,766.70 km) |
| Boulder to Deinze | 4,826.36 mi (7,767.27 km) |
| Boulder to Denderleeuw | 4,849.21 mi (7,804.05 km) |
