| Preakness to Romeoville (Illinois) | 721.22 mi (1,160.69 km) |
| Preakness to Romulus (Michigan) | 480.50 mi (773.29 km) |
| Preakness to Ronkonkoma (New York) | 58.20 mi (93.66 km) |
| Preakness to Roosevelt (New York) | 37.96 mi (61.09 km) |
| Preakness to Rosamond (California) | 2,408.97 mi (3,876.86 km) |
| Preakness to Rosaryville (Maryland) | 203.83 mi (328.03 km) |
| Preakness to Roscoe (Illinois) | 768.79 mi (1,237.24 km) |
| Preakness to Rose Hill (Virginia) | 213.25 mi (343.20 km) |
| Preakness to Roseburg (Oregon) | 2,487.81 mi (4,003.75 km) |
| Preakness to Rosedale (California) | 2,446.26 mi (3,936.88 km) |
| Preakness to Rosedale (Maryland) | 164.18 mi (264.22 km) |
| Preakness to Roselle (Illinois) | 720.58 mi (1,159.66 km) |
| Preakness to Roselle (New Jersey) | 19.81 mi (31.89 km) |
| Preakness to Roselle Park (New Jersey) | 18.99 mi (30.55 km) |
| Preakness to Rosemead (California) | 2,424.34 mi (3,901.60 km) |
