| Rock Island to Owosso (Michigan) | 344.18 mi (553.91 km) |
| Rock Island to Oxford (Alabama) | 601.94 mi (968.72 km) |
| Rock Island to Oxford (Mississippi) | 494.37 mi (795.61 km) |
| Rock Island to Oxford (Ohio) | 335.35 mi (539.70 km) |
| Rock Island to Oxnard (California) | 1,630.85 mi (2,624.59 km) |
| Rock Island to Oxon Hill (Maryland) | 741.60 mi (1,193.49 km) |
| Rock Island to Ozark (Alabama) | 744.25 mi (1,197.75 km) |
| Rock Island to Ozark (Missouri) | 337.11 mi (542.53 km) |
| Rock Island to Pace (Florida) | 773.46 mi (1,244.76 km) |
| Rock Island to Pacific Grove (California) | 1,705.24 mi (2,744.31 km) |
| Rock Island to Pacifica (California) | 1,710.36 mi (2,752.56 km) |
| Rock Island to Paducah (Kentucky) | 321.11 mi (516.77 km) |
| Rock Island to Pahrump (Nevada) | 1,409.16 mi (2,267.82 km) |
| Rock Island to Painesville (Ohio) | 482.12 mi (775.90 km) |
| Rock Island to Palatine (Illinois) | 138.27 mi (222.52 km) |
