| Potters Bar to Lydney | 100.43 mi (161.62 km) |
| Potters Bar to Lye | 97.47 mi (156.87 km) |
| Potters Bar to Lymington | 88.25 mi (142.03 km) |
| Potters Bar to Lymm | 151.10 mi (243.18 km) |
| Potters Bar to Mablethorpe | 115.04 mi (185.13 km) |
| Potters Bar to Macclesfield | 134.95 mi (217.17 km) |
| Potters Bar to Mackworth | 102.42 mi (164.83 km) |
| Potters Bar to Madeley | 115.85 mi (186.44 km) |
| Potters Bar to Maesteg | 148.73 mi (239.35 km) |
| Potters Bar to Maghull | 170.95 mi (275.11 km) |
| Potters Bar to Maidenhead | 25.98 mi (41.80 km) |
| Potters Bar to Maidstone | 42.48 mi (68.37 km) |
| Potters Bar to Maldon | 36.84 mi (59.28 km) |
| Potters Bar to Maltby | 126.94 mi (204.30 km) |
| Potters Bar to Manchester | 150.46 mi (242.15 km) |
