| Sleaford to Manerbio | 709.01 mi (1,141.04 km) |
| Sleaford to Manfredonia | 1,091.17 mi (1,756.07 km) |
| Sleaford to Maniago | 752.08 mi (1,210.36 km) |
| Sleaford to Mantova | 740.32 mi (1,191.43 km) |
| Sleaford to Maranello | 776.50 mi (1,249.66 km) |
| Sleaford to Marano di Napoli | 1,078.55 mi (1,735.76 km) |
| Sleaford to Marano Vicentino | 732.06 mi (1,178.14 km) |
| Sleaford to Marcianise | 1,074.42 mi (1,729.10 km) |
| Sleaford to Marcon | 767.89 mi (1,235.80 km) |
| Sleaford to Mareno di Piave | 755.40 mi (1,215.70 km) |
| Sleaford to Margherita di Savoia | 1,113.11 mi (1,791.37 km) |
| Sleaford to Mariano Comense | 662.70 mi (1,066.51 km) |
| Sleaford to Marigliano | 1,084.55 mi (1,745.42 km) |
| Sleaford to Marino | 984.93 mi (1,585.09 km) |
| Sleaford to Marostica | 736.98 mi (1,186.05 km) |
