| Caldicot to Mickleover | 103.71 mi (166.91 km) |
| Caldicot to Middlesbrough | 215.63 mi (347.02 km) |
| Caldicot to Middleton | 137.74 mi (221.67 km) |
| Caldicot to Middlewich | 111.37 mi (179.23 km) |
| Caldicot to Midsomer Norton | 24.13 mi (38.83 km) |
| Caldicot to Mildenhall | 148.13 mi (238.39 km) |
| Caldicot to Milford Haven | 98.68 mi (158.81 km) |
| Caldicot to Mill Hill | 108.12 mi (174.00 km) |
| Caldicot to Milngavie | 307.33 mi (494.59 km) |
| Caldicot to Milnrow | 142.05 mi (228.61 km) |
| Caldicot to Milton | 104.02 mi (167.40 km) |
| Caldicot to Milton Keynes | 90.45 mi (145.56 km) |
| Caldicot to Minehead | 41.13 mi (66.19 km) |
| Caldicot to Minster | 153.46 mi (246.97 km) |
| Caldicot to Mirfield | 151.07 mi (243.13 km) |
