| Potters Bar to Melzo | 612.07 mi (985.03 km) |
| Potters Bar to Mendicino | 1,164.20 mi (1,873.60 km) |
| Potters Bar to Menfi | 1,164.66 mi (1,874.33 km) |
| Potters Bar to Mentana | 900.21 mi (1,448.75 km) |
| Potters Bar to Merano | 617.87 mi (994.36 km) |
| Potters Bar to Merate | 602.44 mi (969.54 km) |
| Potters Bar to Mercato San Severino | 1,034.88 mi (1,665.47 km) |
| Potters Bar to Mercogliano | 1,026.53 mi (1,652.04 km) |
| Potters Bar to Mesagne | 1,148.84 mi (1,848.88 km) |
| Potters Bar to Messina | 1,204.18 mi (1,937.94 km) |
| Potters Bar to Mestre | 709.85 mi (1,142.39 km) |
| Potters Bar to Mestrino | 694.80 mi (1,118.17 km) |
| Potters Bar to Milan | 606.46 mi (976.00 km) |
| Potters Bar to Milazzo | 1,193.22 mi (1,920.31 km) |
| Potters Bar to Minerbio | 724.98 mi (1,166.74 km) |
