| Willoughby to Mexborough | 3,619.19 mi (5,824.52 km) |
| Willoughby to Mickleover | 3,624.19 mi (5,832.56 km) |
| Willoughby to Middlesbrough | 3,593.96 mi (5,783.93 km) |
| Willoughby to Middleton | 3,583.20 mi (5,766.61 km) |
| Willoughby to Middlewich | 3,582.38 mi (5,765.28 km) |
| Willoughby to Midsomer Norton | 3,629.86 mi (5,841.69 km) |
| Willoughby to Mildenhall | 3,718.76 mi (5,984.77 km) |
| Willoughby to Milford Haven | 3,516.50 mi (5,659.26 km) |
| Willoughby to Mill Hill | 3,709.98 mi (5,970.64 km) |
| Willoughby to Milngavie | 3,448.36 mi (5,549.60 km) |
| Willoughby to Milnrow | 3,584.74 mi (5,769.08 km) |
| Willoughby to Milton | 3,597.57 mi (5,789.73 km) |
| Willoughby to Milton Keynes | 3,677.72 mi (5,918.71 km) |
| Willoughby to Minehead | 3,592.23 mi (5,781.14 km) |
| Willoughby to Minster | 3,756.38 mi (6,045.31 km) |
