| Greensboro to Nuth | 4,166.56 mi (6,705.43 km) |
| Greensboro to Oegstgeest | 4,078.24 mi (6,563.29 km) |
| Greensboro to Oirschot | 4,128.25 mi (6,643.78 km) |
| Greensboro to Oisterwijk | 4,122.16 mi (6,633.98 km) |
| Greensboro to Oldebroek | 4,128.34 mi (6,643.92 km) |
| Greensboro to Oldenzaal | 4,172.26 mi (6,714.61 km) |
| Greensboro to Ommen | 4,146.93 mi (6,673.84 km) |
| Greensboro to Oosterend | 4,121.12 mi (6,632.29 km) |
| Greensboro to Oosterhout | 4,106.94 mi (6,609.48 km) |
| Greensboro to Oosterwolde | 4,130.18 mi (6,646.88 km) |
| Greensboro to Oostzaan | 4,088.72 mi (6,580.16 km) |
| Greensboro to Opmeer | 4,084.92 mi (6,574.04 km) |
| Greensboro to Oss | 4,130.24 mi (6,646.97 km) |
| Greensboro to Oud-Beijerland | 4,084.41 mi (6,573.23 km) |
| Greensboro to Oudenbosch | 4,094.91 mi (6,590.11 km) |
