| Caernarfon to Lye | 101.54 mi (163.41 km) |
| Caernarfon to Lymington | 201.68 mi (324.58 km) |
| Caernarfon to Lymm | 76.07 mi (122.42 km) |
| Caernarfon to Mablethorpe | 187.84 mi (302.29 km) |
| Caernarfon to Macclesfield | 88.90 mi (143.08 km) |
| Caernarfon to Mackworth | 114.48 mi (184.23 km) |
| Caernarfon to Madeley | 83.53 mi (134.42 km) |
| Caernarfon to Maesteg | 108.90 mi (175.26 km) |
| Caernarfon to Maghull | 60.58 mi (97.49 km) |
| Caernarfon to Maidenhead | 187.04 mi (301.02 km) |
| Caernarfon to Maidstone | 240.65 mi (387.28 km) |
| Caernarfon to Maldon | 229.87 mi (369.93 km) |
| Caernarfon to Maltby | 127.93 mi (205.88 km) |
| Caernarfon to Manchester | 86.81 mi (139.70 km) |
| Caernarfon to Mansfield | 127.37 mi (204.99 km) |
