| Gladstone to River Ridge (Louisiana) | 685.14 mi (1,102.62 km) |
| Gladstone to Riverbank (California) | 1,425.92 mi (2,294.80 km) |
| Gladstone to Riverdale (Georgia) | 685.60 mi (1,103.36 km) |
| Gladstone to Riverdale (Illinois) | 400.80 mi (645.02 km) |
| Gladstone to Riverside (California) | 1,314.43 mi (2,115.37 km) |
| Gladstone to Riverside (Ohio) | 557.54 mi (897.28 km) |
| Gladstone to Riverton (Utah) | 925.87 mi (1,490.04 km) |
| Gladstone to Riverton (Wyoming) | 766.95 mi (1,234.28 km) |
| Gladstone to Riverview (Florida) | 1,055.23 mi (1,698.23 km) |
| Gladstone to Riverview (Michigan) | 628.89 mi (1,012.11 km) |
| Gladstone to Riviera Beach (Florida) | 1,197.92 mi (1,927.86 km) |
| Gladstone to Riviera Beach (Maryland) | 964.15 mi (1,551.65 km) |
| Gladstone to Roanoke (Virginia) | 802.58 mi (1,291.63 km) |
| Gladstone to Roanoke Rapids (North Carolina) | 940.96 mi (1,514.33 km) |
| Gladstone to Robbinsdale (Minnesota) | 406.49 mi (654.18 km) |
