| Round Rock to Madison (Mississippi) | 463.66 mi (746.19 km) |
| Round Rock to Madison (New Jersey) | 1,477.86 mi (2,378.39 km) |
| Round Rock to Madison (Wisconsin) | 979.55 mi (1,576.43 km) |
| Round Rock to Madison Heights (Michigan) | 1,153.85 mi (1,856.93 km) |
| Round Rock to Madison Heights (Virginia) | 1,163.08 mi (1,871.79 km) |
| Round Rock to Madisonville (Kentucky) | 748.13 mi (1,204.00 km) |
| Round Rock to Magalia (California) | 1,490.70 mi (2,399.04 km) |
| Round Rock to Magna (Utah) | 1,075.63 mi (1,731.05 km) |
| Round Rock to Magnolia (Arkansas) | 322.25 mi (518.62 km) |
| Round Rock to Maili (Hawaii) | 3,767.72 mi (6,063.56 km) |
| Round Rock to Maitland (Florida) | 986.85 mi (1,588.18 km) |
| Round Rock to Makakilo (Hawaii) | 3,763.92 mi (6,057.45 km) |
| Round Rock to Malden (Massachusetts) | 1,681.23 mi (2,705.68 km) |
| Round Rock to Malibu (California) | 1,254.90 mi (2,019.56 km) |
| Round Rock to Maltby (Washington) | 1,757.67 mi (2,828.70 km) |
