| Giurgiu to Oswego (Illinois) | 5,260.61 mi (8,466.13 km) |
| Giurgiu to Oswego (New York) | 4,743.95 mi (7,634.65 km) |
| Giurgiu to Otsego (Minnesota) | 5,250.20 mi (8,449.37 km) |
| Giurgiu to Ottawa (Illinois) | 5,294.39 mi (8,520.50 km) |
| Giurgiu to Ottawa (Kansas) | 5,660.05 mi (9,108.97 km) |
| Giurgiu to Ottumwa (Iowa) | 5,435.03 mi (8,746.84 km) |
| Giurgiu to Overland (Missouri) | 5,485.91 mi (8,828.71 km) |
| Giurgiu to Overland Park (Kansas) | 5,625.13 mi (9,052.78 km) |
| Giurgiu to Overlea (Maryland) | 4,931.82 mi (7,937.00 km) |
| Giurgiu to Oviedo (Florida) | 5,638.39 mi (9,074.12 km) |
| Giurgiu to Owasso (Oklahoma) | 5,804.77 mi (9,341.88 km) |
| Giurgiu to Owatonna (Minnesota) | 5,299.81 mi (8,529.23 km) |
| Giurgiu to Owensboro (Kentucky) | 5,416.54 mi (8,717.08 km) |
| Giurgiu to Owings Mills (Maryland) | 4,940.47 mi (7,950.92 km) |
| Giurgiu to Owosso (Michigan) | 5,048.15 mi (8,124.21 km) |
