| Key Largo to Miranda de Ebro | 4,449.45 mi (7,160.70 km) |
| Key Largo to Mislata | 4,626.77 mi (7,446.06 km) |
| Key Largo to Moana | 4,162.10 mi (6,698.26 km) |
| Key Largo to Moguer | 4,322.28 mi (6,956.04 km) |
| Key Largo to Molina de Segura | 4,609.56 mi (7,418.37 km) |
| Key Largo to Molins de Rey | 4,716.65 mi (7,590.71 km) |
| Key Largo to Mollerusa | 4,656.80 mi (7,494.40 km) |
| Key Largo to Mollet | 4,724.22 mi (7,602.90 km) |
| Key Largo to Moncada | 4,723.96 mi (7,602.47 km) |
| Key Largo to Moncada | 4,626.59 mi (7,445.78 km) |
| Key Largo to Monforte de Lemos | 4,222.02 mi (6,794.69 km) |
| Key Largo to Monforte del Cid | 4,629.30 mi (7,450.14 km) |
| Key Largo to Mongat | 4,728.87 mi (7,610.38 km) |
| Key Largo to Monovar | 4,622.65 mi (7,439.43 km) |
| Key Largo to Monserrat | 4,619.07 mi (7,433.68 km) |
