| Thornaby on Tees to Mexborough | 73.19 mi (117.80 km) |
| Thornaby on Tees to Mickleover | 114.98 mi (185.03 km) |
| Thornaby on Tees to Middlesbrough | 2.96 mi (4.77 km) |
| Thornaby on Tees to Middleton | 78.06 mi (125.63 km) |
| Thornaby on Tees to Middlewich | 105.22 mi (169.34 km) |
| Thornaby on Tees to Midsomer Norton | 231.49 mi (372.55 km) |
| Thornaby on Tees to Mildenhall | 170.14 mi (273.82 km) |
| Thornaby on Tees to Milford Haven | 250.24 mi (402.72 km) |
| Thornaby on Tees to Mill Hill | 207.84 mi (334.49 km) |
| Thornaby on Tees to Milngavie | 152.30 mi (245.10 km) |
| Thornaby on Tees to Milnrow | 73.27 mi (117.91 km) |
| Thornaby on Tees to Milton | 109.71 mi (176.56 km) |
| Thornaby on Tees to Milton Keynes | 175.45 mi (282.35 km) |
| Thornaby on Tees to Minehead | 248.81 mi (400.42 km) |
| Thornaby on Tees to Minster | 233.87 mi (376.37 km) |
