| Rock Island to Washington (Indiana) | 265.48 mi (427.25 km) |
| Rock Island to Washington (Missouri) | 202.94 mi (326.60 km) |
| Rock Island to Washington (Pennsylvania) | 547.46 mi (881.05 km) |
| Rock Island to Washington (Utah) | 1,256.78 mi (2,022.58 km) |
| Rock Island to Washington Court House (Ohio) | 398.72 mi (641.67 km) |
| Rock Island to Washougal (Washington) | 1,605.46 mi (2,583.74 km) |
| Rock Island to Watauga (Texas) | 697.83 mi (1,123.05 km) |
| Rock Island to Waterbury (Connecticut) | 906.26 mi (1,458.48 km) |
| Rock Island to Waterloo (Illinois) | 217.43 mi (349.91 km) |
| Rock Island to Waterloo (Iowa) | 115.08 mi (185.21 km) |
| Rock Island to Watertown (New York) | 763.52 mi (1,228.76 km) |
| Rock Island to Watertown (South Dakota) | 407.25 mi (655.41 km) |
| Rock Island to Watertown (Wisconsin) | 151.92 mi (244.50 km) |
| Rock Island to Watertown Town (Massachusetts) | 997.41 mi (1,605.17 km) |
| Rock Island to Waterville (Maine) | 1,075.00 mi (1,730.05 km) |
