| Keflavik to Opwijk | 1,323.35 mi (2,129.73 km) |
| Keflavik to Ostend | 1,276.20 mi (2,053.85 km) |
| Keflavik to Oud-Heverlee | 1,343.39 mi (2,161.97 km) |
| Keflavik to Oud-Turnhout | 1,325.28 mi (2,132.84 km) |
| Keflavik to Oudenaarde | 1,314.65 mi (2,115.73 km) |
| Keflavik to Oudenburg | 1,280.64 mi (2,060.99 km) |
| Keflavik to Oupeye | 1,376.08 mi (2,214.59 km) |
| Keflavik to Overijse | 1,342.65 mi (2,160.78 km) |
| Keflavik to Overpelt | 1,342.29 mi (2,160.20 km) |
| Keflavik to Paal | 1,345.46 mi (2,165.30 km) |
| Keflavik to Peer | 1,347.84 mi (2,169.13 km) |
| Keflavik to Pepinster | 1,388.47 mi (2,234.53 km) |
| Keflavik to Peruwelz | 1,332.84 mi (2,145.00 km) |
| Keflavik to Perwez | 1,358.84 mi (2,186.84 km) |
| Keflavik to Philippeville | 1,375.53 mi (2,213.70 km) |
