| Tredegar to Mexborough | 144.51 mi (232.57 km) |
| Tredegar to Mickleover | 105.38 mi (169.60 km) |
| Tredegar to Middlesbrough | 210.45 mi (338.69 km) |
| Tredegar to Middleton | 130.50 mi (210.02 km) |
| Tredegar to Middlewich | 103.33 mi (166.29 km) |
| Tredegar to Midsomer Norton | 47.19 mi (75.94 km) |
| Tredegar to Mildenhall | 164.01 mi (263.95 km) |
| Tredegar to Milford Haven | 77.21 mi (124.26 km) |
| Tredegar to Mill Hill | 129.38 mi (208.22 km) |
| Tredegar to Milngavie | 291.03 mi (468.37 km) |
| Tredegar to Milnrow | 135.16 mi (217.51 km) |
| Tredegar to Milton | 99.36 mi (159.90 km) |
| Tredegar to Milton Keynes | 107.28 mi (172.64 km) |
| Tredegar to Minehead | 40.89 mi (65.81 km) |
| Tredegar to Minster | 175.52 mi (282.47 km) |
