| Watford to Marasesti | 1,310.73 mi (2,109.41 km) |
| Watford to Marghita | 1,057.43 mi (1,701.78 km) |
| Watford to Marginea | 1,193.97 mi (1,921.51 km) |
| Watford to Matca | 1,324.61 mi (2,131.75 km) |
| Watford to Medgidia | 1,410.14 mi (2,269.41 km) |
| Watford to Media | 1,179.76 mi (1,898.64 km) |
| Watford to Miercurea-Ciuc | 1,234.75 mi (1,987.14 km) |
| Watford to Mioveni | 1,245.09 mi (2,003.78 km) |
| Watford to Mizil | 1,306.72 mi (2,102.96 km) |
| Watford to Moinesti | 1,261.50 mi (2,030.18 km) |
| Watford to Moisei | 1,142.87 mi (1,839.27 km) |
| Watford to Moldova Noua | 1,117.71 mi (1,798.77 km) |
| Watford to Moreni | 1,273.84 mi (2,050.05 km) |
| Watford to Motru | 1,168.44 mi (1,880.42 km) |
| Watford to Murfatlar | 1,419.12 mi (2,283.85 km) |
