| Watford to Lubbeek | 232.56 mi (374.27 km) |
| Watford to Lummen | 245.99 mi (395.87 km) |
| Watford to Maaseik | 269.22 mi (433.26 km) |
| Watford to Machelen | 215.04 mi (346.07 km) |
| Watford to Maldegem | 167.90 mi (270.21 km) |
| Watford to Malmedy | 291.34 mi (468.86 km) |
| Watford to Manage | 216.16 mi (347.87 km) |
| Watford to Marche-en-Famenne | 268.43 mi (431.99 km) |
| Watford to Mariakerke | 180.18 mi (289.97 km) |
| Watford to Mechelen | 214.84 mi (345.75 km) |
| Watford to Mechelen-aan-de-Maas | 267.11 mi (429.87 km) |
| Watford to Meerhout | 238.88 mi (384.45 km) |
| Watford to Meise | 210.27 mi (338.40 km) |
| Watford to Melle | 186.68 mi (300.44 km) |
| Watford to Melsele | 203.63 mi (327.71 km) |
