| Horley to Lubbeek | 218.75 mi (352.05 km) |
| Horley to Lummen | 233.51 mi (375.79 km) |
| Horley to Maaseik | 258.25 mi (415.62 km) |
| Horley to Machelen | 201.01 mi (323.49 km) |
| Horley to Maldegem | 156.13 mi (251.26 km) |
| Horley to Malmedy | 275.21 mi (442.91 km) |
| Horley to Manage | 197.75 mi (318.25 km) |
| Horley to Marche-en-Famenne | 249.79 mi (402.00 km) |
| Horley to Mariakerke | 167.00 mi (268.77 km) |
| Horley to Mechelen | 202.08 mi (325.22 km) |
| Horley to Mechelen-aan-de-Maas | 255.19 mi (410.69 km) |
| Horley to Meerhout | 227.72 mi (366.48 km) |
| Horley to Meise | 196.35 mi (315.99 km) |
| Horley to Melle | 172.78 mi (278.07 km) |
| Horley to Melsele | 192.82 mi (310.31 km) |
