| Greensboro to Oswego (Illinois) | 598.23 mi (962.75 km) |
| Greensboro to Oswego (New York) | 537.95 mi (865.75 km) |
| Greensboro to Otsego (Minnesota) | 958.70 mi (1,542.88 km) |
| Greensboro to Ottawa (Illinois) | 605.56 mi (974.55 km) |
| Greensboro to Ottawa (Kansas) | 864.24 mi (1,390.86 km) |
| Greensboro to Ottumwa (Iowa) | 759.62 mi (1,222.48 km) |
| Greensboro to Overland (Missouri) | 605.50 mi (974.46 km) |
| Greensboro to Overland Park (Kansas) | 836.12 mi (1,345.61 km) |
| Greensboro to Overlea (Maryland) | 289.28 mi (465.55 km) |
| Greensboro to Oviedo (Florida) | 519.96 mi (836.80 km) |
| Greensboro to Owasso (Oklahoma) | 891.49 mi (1,434.71 km) |
| Greensboro to Owatonna (Minnesota) | 896.46 mi (1,442.72 km) |
| Greensboro to Owensboro (Kentucky) | 418.58 mi (673.64 km) |
| Greensboro to Owings Mills (Maryland) | 282.79 mi (455.10 km) |
| Greensboro to Owosso (Michigan) | 529.87 mi (852.74 km) |
