| Gladstone to Rockville (Maryland) | 931.16 mi (1,498.55 km) |
| Gladstone to Rockville Centre (New York) | 1,110.19 mi (1,786.68 km) |
| Gladstone to Rockwall (Texas) | 447.48 mi (720.15 km) |
| Gladstone to Rocky Mount (North Carolina) | 942.81 mi (1,517.30 km) |
| Gladstone to Rocky Point (New York) | 1,146.44 mi (1,845.01 km) |
| Gladstone to Rocky River (Ohio) | 686.40 mi (1,104.66 km) |
| Gladstone to Roessleville (New York) | 1,106.80 mi (1,781.22 km) |
| Gladstone to Rogers (Arkansas) | 201.35 mi (324.04 km) |
| Gladstone to Rogers (Minnesota) | 415.73 mi (669.06 km) |
| Gladstone to Rohnert Park (California) | 1,510.61 mi (2,431.09 km) |
| Gladstone to Rolla (Missouri) | 174.68 mi (281.12 km) |
| Gladstone to Rolling Meadows (Illinois) | 395.34 mi (636.24 km) |
| Gladstone to Roma (Texas) | 920.76 mi (1,481.83 km) |
| Gladstone to Rome (Georgia) | 620.89 mi (999.22 km) |
| Gladstone to Rome (New York) | 1,026.48 mi (1,651.97 km) |
