| River Grove to Mirfield | 3,827.30 mi (6,159.44 km) |
| River Grove to Mitcham | 3,955.86 mi (6,366.34 km) |
| River Grove to Mold | 3,788.73 mi (6,097.37 km) |
| River Grove to Molesey | 3,947.80 mi (6,353.37 km) |
| River Grove to Monkseaton | 3,795.54 mi (6,108.33 km) |
| River Grove to Monmouth | 3,844.83 mi (6,187.66 km) |
| River Grove to Montrose | 3,713.05 mi (5,975.58 km) |
| River Grove to Morden | 3,954.19 mi (6,363.66 km) |
| River Grove to Morecambe | 3,772.23 mi (6,070.82 km) |
| River Grove to Moreton | 3,782.71 mi (6,087.68 km) |
| River Grove to Morley | 3,828.44 mi (6,161.28 km) |
| River Grove to Morpeth | 3,783.61 mi (6,089.14 km) |
| River Grove to Morriston | 3,802.24 mi (6,119.12 km) |
| River Grove to Mosbrough | 3,850.08 mi (6,196.11 km) |
| River Grove to Mossley | 3,819.29 mi (6,146.56 km) |
