| Riverdale to Oberkirch | 4,631.20 mi (7,453.19 km) |
| Riverdale to Obernburg am Main | 4,635.68 mi (7,460.41 km) |
| Riverdale to Obernkirchen | 4,563.95 mi (7,344.97 km) |
| Riverdale to Oberschleissheim | 4,783.01 mi (7,697.51 km) |
| Riverdale to Oberstdorf | 4,756.60 mi (7,655.00 km) |
| Riverdale to Obertraubling | 4,784.35 mi (7,699.66 km) |
| Riverdale to Obertshausen | 4,616.60 mi (7,429.71 km) |
| Riverdale to Oberursel | 4,602.32 mi (7,406.72 km) |
| Riverdale to Ochsenfurt | 4,678.59 mi (7,529.46 km) |
| Riverdale to Ochsenhausen | 4,722.20 mi (7,599.64 km) |
| Riverdale to Ochtrup | 4,491.06 mi (7,227.66 km) |
| Riverdale to Odenthal | 4,520.38 mi (7,274.84 km) |
| Riverdale to Oelde | 4,538.75 mi (7,304.41 km) |
| Riverdale to Oelsnitz | 4,738.09 mi (7,625.22 km) |
| Riverdale to Oer-Erkenschwick | 4,508.85 mi (7,256.30 km) |
