| Middle Island to Miranda de Ebro | 3,501.29 mi (5,634.79 km) |
| Middle Island to Mislata | 3,713.72 mi (5,976.65 km) |
| Middle Island to Moana | 3,237.32 mi (5,209.97 km) |
| Middle Island to Moguer | 3,468.60 mi (5,582.18 km) |
| Middle Island to Molina de Segura | 3,719.81 mi (5,986.45 km) |
| Middle Island to Molins de Rey | 3,768.53 mi (6,064.86 km) |
| Middle Island to Mollerusa | 3,709.88 mi (5,970.47 km) |
| Middle Island to Mollet | 3,773.85 mi (6,073.42 km) |
| Middle Island to Moncada | 3,774.29 mi (6,074.13 km) |
| Middle Island to Moncada | 3,712.49 mi (5,974.67 km) |
| Middle Island to Monforte de Lemos | 3,290.14 mi (5,294.97 km) |
| Middle Island to Monforte del Cid | 3,732.87 mi (6,007.47 km) |
| Middle Island to Mongat | 3,779.13 mi (6,081.92 km) |
| Middle Island to Monovar | 3,725.86 mi (5,996.19 km) |
| Middle Island to Monserrat | 3,708.40 mi (5,968.09 km) |
