| Round Rock to Mirfield | 4,776.82 mi (7,687.55 km) |
| Round Rock to Mitcham | 4,900.83 mi (7,887.12 km) |
| Round Rock to Mold | 4,736.09 mi (7,622.00 km) |
| Round Rock to Molesey | 4,892.59 mi (7,873.86 km) |
| Round Rock to Monkseaton | 4,747.97 mi (7,641.11 km) |
| Round Rock to Monmouth | 4,788.79 mi (7,706.82 km) |
| Round Rock to Montrose | 4,667.79 mi (7,512.08 km) |
| Round Rock to Morden | 4,899.13 mi (7,884.38 km) |
| Round Rock to Morecambe | 4,721.94 mi (7,599.23 km) |
| Round Rock to Moreton | 4,730.67 mi (7,613.28 km) |
| Round Rock to Morley | 4,778.17 mi (7,689.73 km) |
| Round Rock to Morpeth | 4,736.16 mi (7,622.12 km) |
| Round Rock to Morriston | 4,744.74 mi (7,635.92 km) |
| Round Rock to Mosbrough | 4,799.00 mi (7,723.25 km) |
| Round Rock to Mossley | 4,768.22 mi (7,673.71 km) |
