| Thornaby on Tees to Mirfield | 62.63 mi (100.80 km) |
| Thornaby on Tees to Mitcham | 223.35 mi (359.45 km) |
| Thornaby on Tees to Mold | 121.73 mi (195.90 km) |
| Thornaby on Tees to Molesey | 221.63 mi (356.68 km) |
| Thornaby on Tees to Monkseaton | 34.05 mi (54.80 km) |
| Thornaby on Tees to Monmouth | 198.75 mi (319.86 km) |
| Thornaby on Tees to Montrose | 155.30 mi (249.93 km) |
| Thornaby on Tees to Morden | 222.93 mi (358.78 km) |
| Thornaby on Tees to Morecambe | 71.53 mi (115.11 km) |
| Thornaby on Tees to Moreton | 108.60 mi (174.78 km) |
| Thornaby on Tees to Morley | 57.22 mi (92.08 km) |
| Thornaby on Tees to Morpeth | 44.82 mi (72.13 km) |
| Thornaby on Tees to Morriston | 227.85 mi (366.69 km) |
| Thornaby on Tees to Mosbrough | 85.26 mi (137.21 km) |
| Thornaby on Tees to Mossley | 78.06 mi (125.63 km) |
