| Opoczno to Massarosa | 694.58 mi (1,117.82 km) |
| Opoczno to Matelica | 655.78 mi (1,055.37 km) |
| Opoczno to Matera | 760.61 mi (1,224.09 km) |
| Opoczno to Matino | 790.55 mi (1,272.27 km) |
| Opoczno to Mazzarino | 1,017.20 mi (1,637.03 km) |
| Opoczno to Meda | 642.77 mi (1,034.44 km) |
| Opoczno to Medesano | 654.22 mi (1,052.87 km) |
| Opoczno to Medicina | 621.53 mi (1,000.26 km) |
| Opoczno to Meldola | 629.17 mi (1,012.55 km) |
| Opoczno to Melegnano | 651.61 mi (1,048.67 km) |
| Opoczno to Melendugno | 773.33 mi (1,244.55 km) |
| Opoczno to Melfi | 750.12 mi (1,207.21 km) |
| Opoczno to Melilli | 1,012.85 mi (1,630.03 km) |
| Opoczno to Melito di Napoli | 778.01 mi (1,252.09 km) |
| Opoczno to Melito di Porto Salvo | 955.54 mi (1,537.80 km) |
