| College Park to Opwijk | 3,844.40 mi (6,186.96 km) |
| College Park to Ostend | 3,786.79 mi (6,094.24 km) |
| College Park to Oud-Heverlee | 3,867.38 mi (6,223.94 km) |
| College Park to Oud-Turnhout | 3,867.69 mi (6,224.45 km) |
| College Park to Oudenaarde | 3,823.68 mi (6,153.61 km) |
| College Park to Oudenburg | 3,791.09 mi (6,101.16 km) |
| College Park to Oupeye | 3,910.13 mi (6,292.75 km) |
| College Park to Overijse | 3,863.26 mi (6,217.32 km) |
| College Park to Overpelt | 3,887.65 mi (6,256.57 km) |
| College Park to Paal | 3,882.47 mi (6,248.24 km) |
| College Park to Peer | 3,891.32 mi (6,262.48 km) |
| College Park to Pepinster | 3,920.93 mi (6,310.12 km) |
| College Park to Peruwelz | 3,831.38 mi (6,166.01 km) |
| College Park to Perwez | 3,878.81 mi (6,242.34 km) |
| College Park to Philippeville | 3,879.08 mi (6,242.77 km) |
