| Takoma Park to Opwijk | 3,847.87 mi (6,192.56 km) |
| Takoma Park to Ostend | 3,790.27 mi (6,099.84 km) |
| Takoma Park to Oud-Heverlee | 3,870.86 mi (6,229.54 km) |
| Takoma Park to Oud-Turnhout | 3,871.15 mi (6,230.02 km) |
| Takoma Park to Oudenaarde | 3,827.16 mi (6,159.22 km) |
| Takoma Park to Oudenburg | 3,794.57 mi (6,106.76 km) |
| Takoma Park to Oupeye | 3,913.61 mi (6,298.34 km) |
| Takoma Park to Overijse | 3,866.74 mi (6,222.92 km) |
| Takoma Park to Overpelt | 3,891.11 mi (6,262.14 km) |
| Takoma Park to Paal | 3,885.94 mi (6,253.82 km) |
| Takoma Park to Peer | 3,894.78 mi (6,268.05 km) |
| Takoma Park to Pepinster | 3,924.40 mi (6,315.72 km) |
| Takoma Park to Peruwelz | 3,834.88 mi (6,171.64 km) |
| Takoma Park to Perwez | 3,882.30 mi (6,247.95 km) |
| Takoma Park to Philippeville | 3,882.58 mi (6,248.40 km) |
