| Cities | Distance |
|---|---|
| Trecate to Orbetello | 240.82 mi (387.55 km) |
| Trecate to Oria | 563.93 mi (907.56 km) |
| Trecate to Oristano | 381.98 mi (614.74 km) |
| Trecate to Orta Nova | 450.41 mi (724.87 km) |
| Trecate to Orte | 274.19 mi (441.27 km) |
| Trecate to Ortona | 353.40 mi (568.75 km) |
| Trecate to Orvieto | 251.52 mi (404.79 km) |
| Trecate to Orzinuovi | 58.24 mi (93.74 km) |
| Trecate to Osimo | 270.17 mi (434.79 km) |
| Trecate to Ospitaletto | 65.44 mi (105.32 km) |
| Trecate to Ostuni | 551.65 mi (887.79 km) |
| Trecate to Ottaviano | 428.90 mi (690.24 km) |
| Trecate to Ovada | 55.03 mi (88.56 km) |
| Trecate to Ozieri | 335.27 mi (539.56 km) |
| Trecate to Paceco | 550.93 mi (886.64 km) |