| Riverdale to Oskaloosa (Iowa) | 698.61 mi (1,124.31 km) |
| Riverdale to Oswego (Illinois) | 600.57 mi (966.52 km) |
| Riverdale to Oswego (New York) | 805.10 mi (1,295.69 km) |
| Riverdale to Otsego (Minnesota) | 944.80 mi (1,520.52 km) |
| Riverdale to Ottawa (Illinois) | 590.09 mi (949.66 km) |
| Riverdale to Ottawa (Kansas) | 698.11 mi (1,123.49 km) |
| Riverdale to Ottumwa (Iowa) | 676.96 mi (1,089.46 km) |
| Riverdale to Overland (Missouri) | 485.91 mi (782.00 km) |
| Riverdale to Overland Park (Kansas) | 680.03 mi (1,094.40 km) |
| Riverdale to Overlea (Maryland) | 593.65 mi (955.39 km) |
| Riverdale to Oviedo (Florida) | 388.85 mi (625.79 km) |
| Riverdale to Owasso (Oklahoma) | 673.31 mi (1,083.59 km) |
| Riverdale to Owatonna (Minnesota) | 867.44 mi (1,396.00 km) |
| Riverdale to Owensboro (Kentucky) | 327.14 mi (526.48 km) |
| Riverdale to Owings Mills (Maryland) | 584.69 mi (940.97 km) |
