| Southend to Mexborough | 158.60 mi (255.23 km) |
| Southend to Mickleover | 133.70 mi (215.17 km) |
| Southend to Middlesbrough | 224.16 mi (360.75 km) |
| Southend to Middleton | 184.37 mi (296.71 km) |
| Southend to Middlewich | 174.79 mi (281.30 km) |
| Southend to Midsomer Norton | 138.74 mi (223.28 km) |
| Southend to Mildenhall | 55.57 mi (89.42 km) |
| Southend to Milford Haven | 246.91 mi (397.37 km) |
| Southend to Mill Hill | 40.64 mi (65.41 km) |
| Southend to Milngavie | 366.16 mi (589.27 km) |
| Southend to Milnrow | 185.14 mi (297.96 km) |
| Southend to Milton | 158.92 mi (255.76 km) |
| Southend to Milton Keynes | 71.36 mi (114.84 km) |
| Southend to Minehead | 181.99 mi (292.89 km) |
| Southend to Minster | 9.88 mi (15.90 km) |
