| Elkridge to Opwijk | 3,827.69 mi (6,160.07 km) |
| Elkridge to Ostend | 3,770.08 mi (6,067.36 km) |
| Elkridge to Oud-Heverlee | 3,850.67 mi (6,197.06 km) |
| Elkridge to Oud-Turnhout | 3,850.95 mi (6,197.50 km) |
| Elkridge to Oudenaarde | 3,806.99 mi (6,126.76 km) |
| Elkridge to Oudenburg | 3,774.38 mi (6,074.29 km) |
| Elkridge to Oupeye | 3,893.42 mi (6,265.85 km) |
| Elkridge to Overijse | 3,846.56 mi (6,190.44 km) |
| Elkridge to Overpelt | 3,870.91 mi (6,229.62 km) |
| Elkridge to Paal | 3,865.75 mi (6,221.32 km) |
| Elkridge to Peer | 3,874.58 mi (6,235.54 km) |
| Elkridge to Pepinster | 3,904.22 mi (6,283.23 km) |
| Elkridge to Peruwelz | 3,814.72 mi (6,139.20 km) |
| Elkridge to Perwez | 3,862.12 mi (6,215.48 km) |
| Elkridge to Philippeville | 3,862.42 mi (6,215.96 km) |
