| Riverdale to Orangeburg (South Carolina) | 204.13 mi (328.51 km) |
| Riverdale to Orangevale (California) | 2,070.44 mi (3,332.05 km) |
| Riverdale to Orchards (Washington) | 2,169.59 mi (3,491.62 km) |
| Riverdale to Orcutt (California) | 2,048.42 mi (3,296.61 km) |
| Riverdale to Oregon (Ohio) | 561.41 mi (903.50 km) |
| Riverdale to Oregon (Wisconsin) | 700.62 mi (1,127.55 km) |
| Riverdale to Oregon City (Oregon) | 2,168.86 mi (3,490.44 km) |
| Riverdale to Orem (Utah) | 1,570.15 mi (2,526.91 km) |
| Riverdale to Orinda (California) | 2,124.90 mi (3,419.70 km) |
| Riverdale to Orland Park (Illinois) | 586.87 mi (944.47 km) |
| Riverdale to Orlando (Florida) | 395.71 mi (636.83 km) |
| Riverdale to Ormond Beach (Florida) | 353.37 mi (568.69 km) |
| Riverdale to Oro Valley (Arizona) | 1,537.39 mi (2,474.19 km) |
| Riverdale to Oroville (California) | 2,087.75 mi (3,359.91 km) |
| Riverdale to Oshkosh (Wisconsin) | 756.15 mi (1,216.91 km) |
