| Zonguldak to Opwijk | 1,462.99 mi (2,354.46 km) |
| Zonguldak to Ostend | 1,520.62 mi (2,447.20 km) |
| Zonguldak to Oud-Heverlee | 1,440.20 mi (2,317.78 km) |
| Zonguldak to Oud-Turnhout | 1,436.80 mi (2,312.30 km) |
| Zonguldak to Oudenaarde | 1,485.35 mi (2,390.44 km) |
| Zonguldak to Oudenburg | 1,516.49 mi (2,440.56 km) |
| Zonguldak to Oupeye | 1,396.85 mi (2,248.01 km) |
| Zonguldak to Overijse | 1,444.85 mi (2,325.26 km) |
| Zonguldak to Overpelt | 1,416.84 mi (2,280.19 km) |
| Zonguldak to Paal | 1,423.19 mi (2,290.41 km) |
| Zonguldak to Peer | 1,413.53 mi (2,274.86 km) |
| Zonguldak to Pepinster | 1,386.71 mi (2,231.70 km) |
| Zonguldak to Peruwelz | 1,480.30 mi (2,382.32 km) |
| Zonguldak to Perwez | 1,429.99 mi (2,301.34 km) |
| Zonguldak to Philippeville | 1,433.62 mi (2,307.18 km) |
