| Groningen to Marghita | 802.98 mi (1,292.28 km) |
| Groningen to Marginea | 921.29 mi (1,482.67 km) |
| Groningen to Matca | 1,063.51 mi (1,711.56 km) |
| Groningen to Medgidia | 1,159.68 mi (1,866.33 km) |
| Groningen to Media | 929.15 mi (1,495.32 km) |
| Groningen to Miercurea-Ciuc | 975.75 mi (1,570.32 km) |
| Groningen to Mioveni | 1,003.79 mi (1,615.44 km) |
| Groningen to Mizil | 1,057.72 mi (1,702.24 km) |
| Groningen to Moinesti | 999.17 mi (1,608.02 km) |
| Groningen to Moisei | 876.02 mi (1,409.81 km) |
| Groningen to Moldova Noua | 898.86 mi (1,446.58 km) |
| Groningen to Moreni | 1,028.78 mi (1,655.66 km) |
| Groningen to Motru | 939.95 mi (1,512.70 km) |
| Groningen to Murfatlar | 1,168.66 mi (1,880.78 km) |
| Groningen to Nasaud | 885.08 mi (1,424.41 km) |
