| Sierre to Miranda de Ebro | 572.60 mi (921.50 km) |
| Sierre to Mislata | 619.27 mi (996.62 km) |
| Sierre to Moana | 849.94 mi (1,367.85 km) |
| Sierre to Moguer | 965.36 mi (1,553.60 km) |
| Sierre to Molina de Segura | 723.69 mi (1,164.67 km) |
| Sierre to Molins de Rey | 435.13 mi (700.27 km) |
| Sierre to Mollerusa | 461.19 mi (742.21 km) |
| Sierre to Mollet | 422.33 mi (679.68 km) |
| Sierre to Moncada | 425.74 mi (685.16 km) |
| Sierre to Moncada | 614.77 mi (989.37 km) |
| Sierre to Monforte de Lemos | 785.99 mi (1,264.93 km) |
| Sierre to Monforte del Cid | 690.28 mi (1,110.90 km) |
| Sierre to Mongat | 424.04 mi (682.43 km) |
| Sierre to Monovar | 690.39 mi (1,111.07 km) |
| Sierre to Monserrat | 631.82 mi (1,016.82 km) |
