| Catonsville to Mirfield | 3,529.37 mi (5,679.97 km) |
| Catonsville to Mitcham | 3,637.94 mi (5,854.69 km) |
| Catonsville to Mold | 3,481.73 mi (5,603.30 km) |
| Catonsville to Molesey | 3,629.30 mi (5,840.80 km) |
| Catonsville to Monkseaton | 3,513.11 mi (5,653.81 km) |
| Catonsville to Monmouth | 3,524.36 mi (5,671.91 km) |
| Catonsville to Montrose | 3,447.32 mi (5,547.92 km) |
| Catonsville to Morden | 3,636.16 mi (5,851.83 km) |
| Catonsville to Morecambe | 3,475.78 mi (5,593.73 km) |
| Catonsville to Moreton | 3,478.32 mi (5,597.81 km) |
| Catonsville to Morley | 3,531.46 mi (5,683.34 km) |
| Catonsville to Morpeth | 3,502.04 mi (5,635.99 km) |
| Catonsville to Morriston | 3,477.16 mi (5,595.95 km) |
| Catonsville to Mosbrough | 3,549.12 mi (5,711.76 km) |
| Catonsville to Mossley | 3,518.71 mi (5,662.82 km) |
