| Preakness to Rosemont (California) | 2,478.95 mi (3,989.48 km) |
| Preakness to Rosemount (Minnesota) | 987.62 mi (1,589.42 km) |
| Preakness to Rosenberg (Texas) | 1,444.60 mi (2,324.86 km) |
| Preakness to Roseville (California) | 2,472.12 mi (3,978.50 km) |
| Preakness to Roseville (Michigan) | 461.97 mi (743.47 km) |
| Preakness to Roseville (Minnesota) | 994.89 mi (1,601.13 km) |
| Preakness to Rossmoor (California) | 2,432.30 mi (3,914.40 km) |
| Preakness to Rossville (Maryland) | 161.50 mi (259.90 km) |
| Preakness to Roswell (Georgia) | 730.86 mi (1,176.20 km) |
| Preakness to Roswell (New Mexico) | 1,738.71 mi (2,798.18 km) |
| Preakness to Round Lake (Illinois) | 722.50 mi (1,162.75 km) |
| Preakness to Round Lake Beach (Illinois) | 721.37 mi (1,160.94 km) |
| Preakness to Round Rock (Texas) | 1,491.76 mi (2,400.75 km) |
| Preakness to Rowland Heights (California) | 2,417.17 mi (3,890.05 km) |
| Preakness to Rowlett (Texas) | 1,346.85 mi (2,167.55 km) |
