| Round Lake Beach to Des Plaines (Illinois) | 25.54 mi (41.09 km) |
| Round Lake Beach to Desert Hot Springs (California) | 1,642.53 mi (2,643.39 km) |
| Round Lake Beach to DeSoto (Texas) | 828.67 mi (1,333.61 km) |
| Round Lake Beach to Destin (Florida) | 832.81 mi (1,340.28 km) |
| Round Lake Beach to Destrehan (Louisiana) | 867.23 mi (1,395.67 km) |
| Round Lake Beach to Detroit (Michigan) | 254.06 mi (408.88 km) |
| Round Lake Beach to Diamond Bar (California) | 1,704.92 mi (2,743.81 km) |
| Round Lake Beach to Diamond Springs (California) | 1,728.02 mi (2,780.98 km) |
| Round Lake Beach to Dickinson (North Dakota) | 786.07 mi (1,265.05 km) |
| Round Lake Beach to Dickinson (Texas) | 973.72 mi (1,567.06 km) |
| Round Lake Beach to Dickson (Tennessee) | 438.02 mi (704.93 km) |
| Round Lake Beach to Difficult Run (Virginia) | 611.34 mi (983.86 km) |
| Round Lake Beach to Dinuba (California) | 1,708.07 mi (2,748.88 km) |
| Round Lake Beach to Discovery Bay (California) | 1,785.19 mi (2,872.98 km) |
| Round Lake Beach to Dix Hills (New York) | 768.61 mi (1,236.96 km) |
