| Katerini to Opwijk | 1,147.74 mi (1,847.11 km) |
| Katerini to Ostend | 1,203.70 mi (1,937.16 km) |
| Katerini to Oud-Heverlee | 1,125.07 mi (1,810.63 km) |
| Katerini to Oud-Turnhout | 1,132.69 mi (1,822.89 km) |
| Katerini to Oudenaarde | 1,164.92 mi (1,874.76 km) |
| Katerini to Oudenburg | 1,199.19 mi (1,929.91 km) |
| Katerini to Oupeye | 1,084.97 mi (1,746.10 km) |
| Katerini to Overijse | 1,128.04 mi (1,815.40 km) |
| Katerini to Overpelt | 1,113.45 mi (1,791.93 km) |
| Katerini to Paal | 1,114.90 mi (1,794.26 km) |
| Katerini to Peer | 1,108.75 mi (1,784.36 km) |
| Katerini to Pepinster | 1,073.12 mi (1,727.02 km) |
| Katerini to Peruwelz | 1,153.67 mi (1,856.65 km) |
| Katerini to Perwez | 1,111.70 mi (1,789.11 km) |
| Katerini to Philippeville | 1,105.87 mi (1,779.73 km) |
