| Southgate to Mexborough | 137.87 mi (221.88 km) |
| Southgate to Mickleover | 106.42 mi (171.26 km) |
| Southgate to Middlesbrough | 208.61 mi (335.73 km) |
| Southgate to Middleton | 158.54 mi (255.15 km) |
| Southgate to Middlewich | 145.43 mi (234.05 km) |
| Southgate to Midsomer Norton | 104.19 mi (167.68 km) |
| Southgate to Mildenhall | 56.19 mi (90.44 km) |
| Southgate to Milford Haven | 210.69 mi (339.07 km) |
| Southgate to Mill Hill | 4.51 mi (7.26 km) |
| Southgate to Milngavie | 343.24 mi (552.39 km) |
| Southgate to Milnrow | 160.04 mi (257.56 km) |
| Southgate to Milton | 129.77 mi (208.85 km) |
| Southgate to Milton Keynes | 39.09 mi (62.90 km) |
| Southgate to Minehead | 147.22 mi (236.92 km) |
| Southgate to Minster | 42.77 mi (68.82 km) |
