| Opelika to Mendota (California) | 1,996.84 mi (3,213.60 km) |
| Opelika to Mendota Heights (Minnesota) | 941.14 mi (1,514.61 km) |
| Opelika to Menifee (California) | 1,833.58 mi (2,950.86 km) |
| Opelika to Menlo Park (California) | 2,093.49 mi (3,369.14 km) |
| Opelika to Menomonee Falls (Wisconsin) | 739.80 mi (1,190.59 km) |
| Opelika to Menomonie (Wisconsin) | 914.42 mi (1,471.62 km) |
| Opelika to Mentor (Ohio) | 662.04 mi (1,065.46 km) |
| Opelika to Mequon (Wisconsin) | 744.16 mi (1,197.61 km) |
| Opelika to Merced (California) | 2,001.13 mi (3,220.50 km) |
| Opelika to Mercedes (Texas) | 877.37 mi (1,411.99 km) |
| Opelika to Mercer Island (Washington) | 2,174.98 mi (3,500.29 km) |
| Opelika to Mercerville (New Jersey) | 790.49 mi (1,272.16 km) |
| Opelika to Meriden (Connecticut) | 923.88 mi (1,486.83 km) |
| Opelika to Meridian (Idaho) | 1,833.80 mi (2,951.22 km) |
| Opelika to Meridian (Mississippi) | 193.93 mi (312.09 km) |
