| Rock Island to Harrison (Ohio) | 341.15 mi (549.02 km) |
| Rock Island to Harrison (Wisconsin) | 221.02 mi (355.70 km) |
| Rock Island to Harrisonburg (Virginia) | 654.01 mi (1,052.52 km) |
| Rock Island to Hartford (Connecticut) | 923.12 mi (1,485.61 km) |
| Rock Island to Hartford (Wisconsin) | 170.37 mi (274.19 km) |
| Rock Island to Hartselle (Alabama) | 524.62 mi (844.30 km) |
| Rock Island to Hartsville (Tennessee) | 423.74 mi (681.95 km) |
| Rock Island to Harvey (Illinois) | 151.86 mi (244.39 km) |
| Rock Island to Harvey (Louisiana) | 800.78 mi (1,288.73 km) |
| Rock Island to Hasbrouck Heights (New Jersey) | 858.40 mi (1,381.46 km) |
| Rock Island to Haslett (Michigan) | 328.87 mi (529.27 km) |
| Rock Island to Hastings (Minnesota) | 252.80 mi (406.84 km) |
| Rock Island to Hastings (Nebraska) | 411.22 mi (661.79 km) |
| Rock Island to Hattiesburg (Mississippi) | 705.66 mi (1,135.64 km) |
| Rock Island to Hauppauge (New York) | 903.45 mi (1,453.96 km) |
