| Rock Island to Mankato (Minnesota) | 253.80 mi (408.45 km) |
| Rock Island to Manor (Texas) | 859.76 mi (1,383.64 km) |
| Rock Island to Manorville (New York) | 924.76 mi (1,488.25 km) |
| Rock Island to Mansfield (Ohio) | 421.95 mi (679.06 km) |
| Rock Island to Mansfield (Texas) | 712.44 mi (1,146.56 km) |
| Rock Island to Manteca (California) | 1,641.54 mi (2,641.80 km) |
| Rock Island to Manville (New Jersey) | 835.18 mi (1,344.09 km) |
| Rock Island to Maple Grove (Minnesota) | 290.12 mi (466.90 km) |
| Rock Island to Maple Heights (Ohio) | 467.02 mi (751.59 km) |
| Rock Island to Maple Valley (Washington) | 1,592.89 mi (2,563.51 km) |
| Rock Island to Mapleton (Utah) | 1,099.27 mi (1,769.10 km) |
| Rock Island to Maplewood (Minnesota) | 272.13 mi (437.95 km) |
| Rock Island to Marana (Arizona) | 1,291.40 mi (2,078.32 km) |
| Rock Island to Marco Island (Florida) | 1,187.11 mi (1,910.47 km) |
| Rock Island to Margate (Florida) | 1,206.32 mi (1,941.38 km) |
