| Sleaford to Melzo | 680.52 mi (1,095.20 km) |
| Sleaford to Mendicino | 1,231.89 mi (1,982.53 km) |
| Sleaford to Menfi | 1,241.78 mi (1,998.45 km) |
| Sleaford to Mentana | 970.10 mi (1,561.23 km) |
| Sleaford to Merano | 674.63 mi (1,085.71 km) |
| Sleaford to Merate | 670.02 mi (1,078.29 km) |
| Sleaford to Mercato San Severino | 1,102.52 mi (1,774.34 km) |
| Sleaford to Mercogliano | 1,093.90 mi (1,760.46 km) |
| Sleaford to Mesagne | 1,209.93 mi (1,947.19 km) |
| Sleaford to Messina | 1,275.24 mi (2,052.29 km) |
| Sleaford to Mestre | 769.07 mi (1,237.69 km) |
| Sleaford to Mestrino | 755.69 mi (1,216.16 km) |
| Sleaford to Milan | 675.82 mi (1,087.62 km) |
| Sleaford to Milazzo | 1,264.90 mi (2,035.66 km) |
| Sleaford to Minerbio | 790.22 mi (1,271.73 km) |
