| Round Rock to Masanasa | 5,265.87 mi (8,474.60 km) |
| Round Rock to Masquefa | 5,298.15 mi (8,526.55 km) |
| Round Rock to Matadepera | 5,304.29 mi (8,536.42 km) |
| Round Rock to Mazarron | 5,281.67 mi (8,500.02 km) |
| Round Rock to Meco | 5,091.87 mi (8,194.58 km) |
| Round Rock to Medina del Campo | 4,994.65 mi (8,038.12 km) |
| Round Rock to Medina Sidonia | 5,091.73 mi (8,194.35 km) |
| Round Rock to Mejorada del Campo | 5,093.91 mi (8,197.86 km) |
| Round Rock to Meliana | 5,264.30 mi (8,472.07 km) |
| Round Rock to Mengibar | 5,149.08 mi (8,286.65 km) |
| Round Rock to Merida | 4,998.08 mi (8,043.63 km) |
| Round Rock to Miajadas | 5,003.60 mi (8,052.52 km) |
| Round Rock to Mieres | 4,898.06 mi (7,882.66 km) |
| Round Rock to Miguelturra | 5,111.23 mi (8,225.72 km) |
| Round Rock to Mijas | 5,151.37 mi (8,290.33 km) |
