| Grefrath to Matelica | 639.15 mi (1,028.61 km) |
| Grefrath to Matera | 884.65 mi (1,423.71 km) |
| Grefrath to Matino | 963.82 mi (1,551.12 km) |
| Grefrath to Mazzarino | 1,043.28 mi (1,679.00 km) |
| Grefrath to Meda | 412.46 mi (663.79 km) |
| Grefrath to Medesano | 487.46 mi (784.49 km) |
| Grefrath to Medicina | 532.84 mi (857.53 km) |
| Grefrath to Meldola | 563.57 mi (906.98 km) |
| Grefrath to Melegnano | 435.03 mi (700.12 km) |
| Grefrath to Melendugno | 955.87 mi (1,538.33 km) |
| Grefrath to Melfi | 840.20 mi (1,352.17 km) |
| Grefrath to Melilli | 1,068.15 mi (1,719.02 km) |
| Grefrath to Melito di Napoli | 812.00 mi (1,306.78 km) |
| Grefrath to Melito di Porto Salvo | 1,034.98 mi (1,665.64 km) |
| Grefrath to Melzo | 427.11 mi (687.36 km) |
