| Rhondda to Massarosa | 831.22 mi (1,337.72 km) |
| Rhondda to Matelica | 957.10 mi (1,540.30 km) |
| Rhondda to Matera | 1,214.05 mi (1,953.82 km) |
| Rhondda to Matino | 1,302.01 mi (2,095.38 km) |
| Rhondda to Mazzarino | 1,309.58 mi (2,107.57 km) |
| Rhondda to Meda | 704.88 mi (1,134.39 km) |
| Rhondda to Medesano | 782.00 mi (1,258.50 km) |
| Rhondda to Medicina | 849.49 mi (1,367.13 km) |
| Rhondda to Meldola | 880.92 mi (1,417.70 km) |
| Rhondda to Melegnano | 724.52 mi (1,166.00 km) |
| Rhondda to Melendugno | 1,298.16 mi (2,089.19 km) |
| Rhondda to Melfi | 1,162.77 mi (1,871.30 km) |
| Rhondda to Melilli | 1,345.63 mi (2,165.59 km) |
| Rhondda to Melito di Napoli | 1,116.01 mi (1,796.05 km) |
| Rhondda to Melito di Porto Salvo | 1,327.48 mi (2,136.37 km) |
