| Riverdale to Odenton (Maryland) | 573.25 mi (922.56 km) |
| Riverdale to Odessa (Texas) | 1,047.65 mi (1,686.03 km) |
| Riverdale to Ogden (Utah) | 1,594.61 mi (2,566.28 km) |
| Riverdale to Oildale (California) | 1,965.59 mi (3,163.30 km) |
| Riverdale to Ojus (Florida) | 584.01 mi (939.87 km) |
| Riverdale to Okemos (Michigan) | 631.64 mi (1,016.52 km) |
| Riverdale to Oklahoma City (Oklahoma) | 756.89 mi (1,218.10 km) |
| Riverdale to Okmulgee (Oklahoma) | 674.21 mi (1,085.04 km) |
| Riverdale to Olathe (Kansas) | 686.14 mi (1,104.23 km) |
| Riverdale to Old Jamestown (Missouri) | 489.80 mi (788.25 km) |
| Riverdale to Oldsmar (Florida) | 394.66 mi (635.15 km) |
| Riverdale to Olean (New York) | 672.49 mi (1,082.27 km) |
| Riverdale to Olive Branch (Mississippi) | 325.06 mi (523.13 km) |
| Riverdale to Olivehurst (California) | 2,087.81 mi (3,360.01 km) |
| Riverdale to Olney (Maryland) | 561.35 mi (903.41 km) |
