| Rock Island to Ramsey (New Jersey) | 852.86 mi (1,372.55 km) |
| Rock Island to Rancho Cordova (California) | 1,626.48 mi (2,617.56 km) |
| Rock Island to Rancho Cucamonga (California) | 1,550.60 mi (2,495.46 km) |
| Rock Island to Rancho Mirage (California) | 1,504.33 mi (2,420.99 km) |
| Rock Island to Rancho Palos Verdes (California) | 1,602.89 mi (2,579.60 km) |
| Rock Island to Rancho San Diego (California) | 1,562.96 mi (2,515.34 km) |
| Rock Island to Rancho Santa Margarita (California) | 1,568.00 mi (2,523.45 km) |
| Rock Island to Randallstown (Maryland) | 738.35 mi (1,188.26 km) |
| Rock Island to Rantoul (Illinois) | 150.26 mi (241.82 km) |
| Rock Island to Rapid City (South Dakota) | 664.94 mi (1,070.12 km) |
| Rock Island to Ravenna (Ohio) | 484.96 mi (780.46 km) |
| Rock Island to Raymondville (Texas) | 1,113.92 mi (1,792.68 km) |
| Rock Island to Raymore (Missouri) | 275.38 mi (443.19 km) |
| Rock Island to Raytown (Missouri) | 266.73 mi (429.26 km) |
| Rock Island to Reading (Ohio) | 358.96 mi (577.68 km) |
