| Rockford to Marrero (Louisiana) | 856.84 mi (1,378.95 km) |
| Rockford to Marshall (Minnesota) | 370.05 mi (595.54 km) |
| Rockford to Marshall (Missouri) | 306.84 mi (493.80 km) |
| Rockford to Marshall (Texas) | 731.39 mi (1,177.05 km) |
| Rockford to Marshalltown (Iowa) | 197.45 mi (317.77 km) |
| Rockford to Marshfield (Wisconsin) | 175.10 mi (281.79 km) |
| Rockford to Martha Lake (Washington) | 1,650.69 mi (2,656.54 km) |
| Rockford to Martin (Tennessee) | 409.27 mi (658.65 km) |
| Rockford to Martinez (California) | 1,759.39 mi (2,831.47 km) |
| Rockford to Martinez (Georgia) | 712.71 mi (1,147.00 km) |
| Rockford to Martinsburg (West Virginia) | 610.27 mi (982.14 km) |
| Rockford to Martinsville (Indiana) | 239.90 mi (386.09 km) |
| Rockford to Martinsville (New Jersey) | 758.29 mi (1,220.34 km) |
| Rockford to Martinsville (Virginia) | 623.29 mi (1,003.10 km) |
| Rockford to Maryland City (Maryland) | 677.64 mi (1,090.56 km) |
