| Rhondda to Manerbio | 754.05 mi (1,213.53 km) |
| Rhondda to Manfredonia | 1,141.88 mi (1,837.68 km) |
| Rhondda to Maniago | 821.55 mi (1,322.16 km) |
| Rhondda to Mantova | 787.95 mi (1,268.09 km) |
| Rhondda to Maranello | 818.82 mi (1,317.77 km) |
| Rhondda to Marano di Napoli | 1,115.10 mi (1,794.58 km) |
| Rhondda to Marano Vicentino | 789.32 mi (1,270.29 km) |
| Rhondda to Marcianise | 1,112.46 mi (1,790.33 km) |
| Rhondda to Marcon | 829.02 mi (1,334.18 km) |
| Rhondda to Mareno di Piave | 819.62 mi (1,319.05 km) |
| Rhondda to Margherita di Savoia | 1,163.36 mi (1,872.24 km) |
| Rhondda to Mariano Comense | 704.01 mi (1,132.99 km) |
| Rhondda to Marigliano | 1,122.85 mi (1,807.05 km) |
| Rhondda to Marino | 1,017.78 mi (1,637.96 km) |
| Rhondda to Marostica | 796.09 mi (1,281.18 km) |
