| Donostia to Marasesti | 1,439.70 mi (2,316.97 km) |
| Donostia to Marghita | 1,207.91 mi (1,943.95 km) |
| Donostia to Marginea | 1,372.70 mi (2,209.15 km) |
| Donostia to Matca | 1,454.39 mi (2,340.62 km) |
| Donostia to Medgidia | 1,501.30 mi (2,416.11 km) |
| Donostia to Media | 1,300.90 mi (2,093.59 km) |
| Donostia to Miercurea-Ciuc | 1,369.96 mi (2,204.74 km) |
| Donostia to Mioveni | 1,333.49 mi (2,146.04 km) |
| Donostia to Mizil | 1,406.25 mi (2,263.14 km) |
| Donostia to Moinesti | 1,402.30 mi (2,256.79 km) |
| Donostia to Moisei | 1,312.01 mi (2,111.48 km) |
| Donostia to Moldova Noua | 1,174.57 mi (1,890.29 km) |
| Donostia to Moreni | 1,367.63 mi (2,200.99 km) |
| Donostia to Motru | 1,238.14 mi (1,992.60 km) |
| Donostia to Murfatlar | 1,509.27 mi (2,428.93 km) |
