| River Grove to Marsala | 4,992.85 mi (8,035.22 km) |
| River Grove to Marsciano | 4,765.84 mi (7,669.88 km) |
| River Grove to Martano | 5,122.50 mi (8,243.87 km) |
| River Grove to Martellago | 4,647.44 mi (7,479.33 km) |
| River Grove to Martina Franca | 5,061.57 mi (8,145.81 km) |
| River Grove to Martinengo | 4,553.82 mi (7,328.66 km) |
| River Grove to Martinsicuro | 4,829.81 mi (7,772.83 km) |
| River Grove to Mascali | 5,110.03 mi (8,223.80 km) |
| River Grove to Mascalucia | 5,112.15 mi (8,227.22 km) |
| River Grove to Masera di Padova | 4,645.87 mi (7,476.81 km) |
| River Grove to Maserada sul Piave | 4,645.01 mi (7,475.43 km) |
| River Grove to Massa | 4,631.38 mi (7,453.49 km) |
| River Grove to Massa Lombarda | 4,680.34 mi (7,532.28 km) |
| River Grove to Massafra | 5,058.38 mi (8,140.68 km) |
| River Grove to Massalubrense | 4,946.76 mi (7,961.04 km) |
