| Harpenden to Chaudfontaine | 272.72 mi (438.90 km) |
| Harpenden to Chaumont-Gistoux | 231.84 mi (373.11 km) |
| Harpenden to Chimay | 237.10 mi (381.58 km) |
| Harpenden to Ciney | 258.87 mi (416.61 km) |
| Harpenden to Colfontaine | 206.76 mi (332.74 km) |
| Harpenden to Courcelles | 225.42 mi (362.78 km) |
| Harpenden to Court-Saint-Etienne | 227.98 mi (366.90 km) |
| Harpenden to Couvin | 243.34 mi (391.62 km) |
| Harpenden to Damme | 161.09 mi (259.24 km) |
| Harpenden to De Haan | 150.26 mi (241.82 km) |
| Harpenden to De Panne | 136.03 mi (218.92 km) |
| Harpenden to De Pinte | 181.48 mi (292.06 km) |
| Harpenden to Deerlijk | 173.26 mi (278.83 km) |
| Harpenden to Deinze | 177.11 mi (285.03 km) |
| Harpenden to Denderleeuw | 201.96 mi (325.03 km) |
