| Chalkida to Opwijk | 1,279.16 mi (2,058.61 km) |
| Chalkida to Ostend | 1,334.60 mi (2,147.84 km) |
| Chalkida to Oud-Heverlee | 1,256.64 mi (2,022.37 km) |
| Chalkida to Oud-Turnhout | 1,265.42 mi (2,036.49 km) |
| Chalkida to Oudenaarde | 1,295.62 mi (2,085.10 km) |
| Chalkida to Oudenburg | 1,330.08 mi (2,140.55 km) |
| Chalkida to Oupeye | 1,217.15 mi (1,958.81 km) |
| Chalkida to Overijse | 1,259.39 mi (2,026.80 km) |
| Chalkida to Overpelt | 1,246.36 mi (2,005.82 km) |
| Chalkida to Paal | 1,247.29 mi (2,007.32 km) |
| Chalkida to Peer | 1,241.54 mi (1,998.06 km) |
| Chalkida to Pepinster | 1,205.18 mi (1,939.55 km) |
| Chalkida to Peruwelz | 1,283.63 mi (2,065.80 km) |
| Chalkida to Perwez | 1,242.98 mi (2,000.38 km) |
| Chalkida to Philippeville | 1,235.99 mi (1,989.14 km) |
