| Middle River to Mansfield | 3,543.00 mi (5,701.91 km) |
| Middle River to March | 3,606.33 mi (5,803.82 km) |
| Middle River to Margate | 3,684.40 mi (5,929.47 km) |
| Middle River to Market Drayton | 3,496.23 mi (5,626.64 km) |
| Middle River to Market Harborough | 3,567.43 mi (5,741.22 km) |
| Middle River to Marlow | 3,592.13 mi (5,780.97 km) |
| Middle River to Marple | 3,503.83 mi (5,638.86 km) |
| Middle River to Marton | 3,516.11 mi (5,658.63 km) |
| Middle River to Maryport | 3,424.50 mi (5,511.19 km) |
| Middle River to Matlock | 3,529.03 mi (5,679.43 km) |
| Middle River to Melksham | 3,540.61 mi (5,698.07 km) |
| Middle River to Meltham | 3,508.51 mi (5,646.40 km) |
| Middle River to Melton Mowbray | 3,562.93 mi (5,733.98 km) |
| Middle River to Merthyr Tudful | 3,482.20 mi (5,604.05 km) |
| Middle River to Methil | 3,419.02 mi (5,502.38 km) |
