| River Grove to Mexborough | 3,847.73 mi (6,192.33 km) |
| River Grove to Mickleover | 3,855.89 mi (6,205.45 km) |
| River Grove to Middlesbrough | 3,817.26 mi (6,143.29 km) |
| River Grove to Middleton | 3,812.60 mi (6,135.78 km) |
| River Grove to Middlewich | 3,813.82 mi (6,137.74 km) |
| River Grove to Midsomer Norton | 3,870.13 mi (6,228.37 km) |
| River Grove to Mildenhall | 3,950.36 mi (6,357.49 km) |
| River Grove to Milford Haven | 3,757.98 mi (6,047.89 km) |
| River Grove to Mill Hill | 3,945.82 mi (6,350.18 km) |
| River Grove to Milngavie | 3,668.28 mi (5,903.52 km) |
| River Grove to Milnrow | 3,813.78 mi (6,137.68 km) |
| River Grove to Milton | 3,829.31 mi (6,162.68 km) |
| River Grove to Milton Keynes | 3,912.36 mi (6,296.34 km) |
| River Grove to Minehead | 3,834.12 mi (6,170.42 km) |
| River Grove to Minster | 3,991.70 mi (6,424.02 km) |
