| Rhondda to Manassas (Virginia) | 3,553.01 mi (5,718.01 km) |
| Rhondda to Manassas Park (Virginia) | 3,550.30 mi (5,713.65 km) |
| Rhondda to Manatí (Puerto Rico) | 4,078.34 mi (6,563.45 km) |
| Rhondda to Manchester (Missouri) | 4,083.57 mi (6,571.87 km) |
| Rhondda to Manchester (New Hampshire) | 3,124.32 mi (5,028.10 km) |
| Rhondda to Manchester (Tennessee) | 4,056.36 mi (6,528.08 km) |
| Rhondda to Manchester (Virginia) | 3,611.85 mi (5,812.71 km) |
| Rhondda to Mandan (North Dakota) | 4,069.94 mi (6,549.94 km) |
| Rhondda to Mandeville (Louisiana) | 4,469.90 mi (7,193.60 km) |
| Rhondda to Mango (Florida) | 4,265.45 mi (6,864.58 km) |
| Rhondda to Manhattan (Kansas) | 4,287.93 mi (6,900.76 km) |
| Rhondda to Manhattan (New York) | 3,319.37 mi (5,342.01 km) |
| Rhondda to Manhattan Beach (California) | 5,342.68 mi (8,598.21 km) |
| Rhondda to Manitowoc (Wisconsin) | 3,719.88 mi (5,986.57 km) |
| Rhondda to Mankato (Minnesota) | 3,951.45 mi (6,359.25 km) |
