| Rockford to Maricopa (Arizona) | 1,400.99 mi (2,254.68 km) |
| Rockford to Marietta (Georgia) | 624.10 mi (1,004.38 km) |
| Rockford to Marietta (Ohio) | 443.53 mi (713.79 km) |
| Rockford to Marina (California) | 1,775.92 mi (2,858.07 km) |
| Rockford to Marinette (Wisconsin) | 208.02 mi (334.77 km) |
| Rockford to Marion (Arkansas) | 491.38 mi (790.81 km) |
| Rockford to Marion (Illinois) | 312.72 mi (503.28 km) |
| Rockford to Marion (Indiana) | 212.27 mi (341.62 km) |
| Rockford to Marion (Iowa) | 129.98 mi (209.18 km) |
| Rockford to Marion (Ohio) | 328.43 mi (528.56 km) |
| Rockford to Marion Oaks (Florida) | 993.09 mi (1,598.23 km) |
| Rockford to Markham (Illinois) | 84.04 mi (135.24 km) |
| Rockford to Marlborough (Massachusetts) | 893.56 mi (1,438.05 km) |
| Rockford to Marlton (New Jersey) | 753.01 mi (1,211.86 km) |
| Rockford to Marquette (Michigan) | 307.08 mi (494.20 km) |
