| Greensboro to Opwijk | 4,096.38 mi (6,592.49 km) |
| Greensboro to Ostend | 4,038.74 mi (6,499.72 km) |
| Greensboro to Oud-Heverlee | 4,119.35 mi (6,629.45 km) |
| Greensboro to Oud-Turnhout | 4,120.10 mi (6,630.67 km) |
| Greensboro to Oudenaarde | 4,075.45 mi (6,558.80 km) |
| Greensboro to Oudenburg | 4,043.02 mi (6,506.60 km) |
| Greensboro to Oupeye | 4,162.20 mi (6,698.42 km) |
| Greensboro to Overijse | 4,115.16 mi (6,622.72 km) |
| Greensboro to Overpelt | 4,140.07 mi (6,662.80 km) |
| Greensboro to Paal | 4,134.71 mi (6,654.17 km) |
| Greensboro to Peer | 4,143.68 mi (6,668.61 km) |
| Greensboro to Pepinster | 4,172.92 mi (6,715.67 km) |
| Greensboro to Peruwelz | 4,082.86 mi (6,570.73 km) |
| Greensboro to Perwez | 4,130.64 mi (6,647.63 km) |
| Greensboro to Philippeville | 4,130.49 mi (6,647.39 km) |
