| Gretna to Marsala | 5,592.17 mi (8,999.74 km) |
| Gretna to Marsciano | 5,407.56 mi (8,702.63 km) |
| Gretna to Martano | 5,768.49 mi (9,283.50 km) |
| Gretna to Martellago | 5,309.57 mi (8,544.93 km) |
| Gretna to Martina Franca | 5,707.04 mi (9,184.59 km) |
| Gretna to Martinengo | 5,207.44 mi (8,380.57 km) |
| Gretna to Martinsicuro | 5,477.70 mi (8,815.50 km) |
| Gretna to Mascali | 5,722.32 mi (9,209.19 km) |
| Gretna to Mascalucia | 5,722.21 mi (9,209.01 km) |
| Gretna to Masera di Padova | 5,305.11 mi (8,537.76 km) |
| Gretna to Maserada sul Piave | 5,309.33 mi (8,544.54 km) |
| Gretna to Massa | 5,273.60 mi (8,487.04 km) |
| Gretna to Massa Lombarda | 5,332.45 mi (8,581.74 km) |
| Gretna to Massafra | 5,702.00 mi (9,176.49 km) |
| Gretna to Massalubrense | 5,578.40 mi (8,977.56 km) |
