| Tczew to Orbetello | 875.97 mi (1,409.73 km) |
| Tczew to Oria | 940.35 mi (1,513.35 km) |
| Tczew to Oristano | 1,088.95 mi (1,752.50 km) |
| Tczew to Orta Nova | 892.78 mi (1,436.79 km) |
| Tczew to Orte | 854.89 mi (1,375.81 km) |
| Tczew to Ortona | 835.45 mi (1,344.53 km) |
| Tczew to Orvieto | 842.38 mi (1,355.68 km) |
| Tczew to Orzinuovi | 717.76 mi (1,155.13 km) |
| Tczew to Osimo | 771.03 mi (1,240.86 km) |
| Tczew to Ospitaletto | 705.08 mi (1,134.71 km) |
| Tczew to Ostuni | 924.39 mi (1,487.67 km) |
| Tczew to Ottaviano | 936.16 mi (1,506.61 km) |
| Tczew to Ovada | 795.04 mi (1,279.49 km) |
| Tczew to Ozieri | 1,037.29 mi (1,669.36 km) |
| Tczew to Paceco | 1,151.22 mi (1,852.72 km) |
