| Upper Grand Lagoon to Miranda de Ebro | 4,501.29 mi (7,244.13 km) |
| Upper Grand Lagoon to Mislata | 4,701.43 mi (7,566.22 km) |
| Upper Grand Lagoon to Moana | 4,226.95 mi (6,802.62 km) |
| Upper Grand Lagoon to Moguer | 4,428.95 mi (7,127.71 km) |
| Upper Grand Lagoon to Molina de Segura | 4,697.94 mi (7,560.60 km) |
| Upper Grand Lagoon to Molins de Rey | 4,769.78 mi (7,676.21 km) |
| Upper Grand Lagoon to Mollerusa | 4,710.43 mi (7,580.70 km) |
| Upper Grand Lagoon to Mollet | 4,775.91 mi (7,686.09 km) |
| Upper Grand Lagoon to Moncada | 4,776.11 mi (7,686.40 km) |
| Upper Grand Lagoon to Moncada | 4,700.62 mi (7,564.92 km) |
| Upper Grand Lagoon to Monforte de Lemos | 4,282.89 mi (6,892.64 km) |
| Upper Grand Lagoon to Monforte del Cid | 4,713.89 mi (7,586.28 km) |
| Upper Grand Lagoon to Mongat | 4,780.99 mi (7,694.27 km) |
| Upper Grand Lagoon to Monovar | 4,706.99 mi (7,575.17 km) |
| Upper Grand Lagoon to Monserrat | 4,695.13 mi (7,556.09 km) |
