| Constanta to Mislata | 1,522.02 mi (2,449.46 km) |
| Constanta to Moana | 1,870.35 mi (3,010.04 km) |
| Constanta to Moguer | 1,901.58 mi (3,060.30 km) |
| Constanta to Molina de Segura | 1,600.32 mi (2,575.47 km) |
| Constanta to Molins de Rey | 1,356.88 mi (2,183.69 km) |
| Constanta to Mollerusa | 1,408.00 mi (2,265.96 km) |
| Constanta to Mollet | 1,344.79 mi (2,164.23 km) |
| Constanta to Moncada | 1,346.89 mi (2,167.61 km) |
| Constanta to Moncada | 1,519.23 mi (2,444.96 km) |
| Constanta to Monforte de Lemos | 1,805.41 mi (2,905.53 km) |
| Constanta to Monforte del Cid | 1,567.17 mi (2,522.12 km) |
| Constanta to Mongat | 1,342.78 mi (2,160.99 km) |
| Constanta to Monovar | 1,570.87 mi (2,528.07 km) |
| Constanta to Monserrat | 1,534.34 mi (2,469.28 km) |
| Constanta to Montijo | 1,844.14 mi (2,967.86 km) |
