| Riverdale to Oerlinghausen | 4,555.08 mi (7,330.69 km) |
| Riverdale to Oestrich-Winkel | 4,585.00 mi (7,378.85 km) |
| Riverdale to Offenburg | 4,626.95 mi (7,446.35 km) |
| Riverdale to Oftersheim | 4,627.06 mi (7,446.53 km) |
| Riverdale to Ohrdruf | 4,669.17 mi (7,514.30 km) |
| Riverdale to Ohringen | 4,669.35 mi (7,514.60 km) |
| Riverdale to Olbernhau | 4,775.51 mi (7,685.44 km) |
| Riverdale to Olching | 4,774.40 mi (7,683.65 km) |
| Riverdale to Oldenburg | 4,504.72 mi (7,249.64 km) |
| Riverdale to Oldenburg in Holstein | 4,571.52 mi (7,357.15 km) |
| Riverdale to Olfen | 4,512.01 mi (7,261.37 km) |
| Riverdale to Olpe | 4,549.31 mi (7,321.41 km) |
| Riverdale to Olsberg | 4,565.50 mi (7,347.46 km) |
| Riverdale to Oranienburg | 4,705.21 mi (7,572.31 km) |
| Riverdale to Ortenberg | 4,616.98 mi (7,430.32 km) |
