| Gassino Torinese to Oria | 590.42 mi (950.19 km) |
| Gassino Torinese to Oristano | 362.86 mi (583.97 km) |
| Gassino Torinese to Orta Nova | 475.51 mi (765.26 km) |
| Gassino Torinese to Orte | 292.67 mi (471.00 km) |
| Gassino Torinese to Ortona | 380.03 mi (611.59 km) |
| Gassino Torinese to Orvieto | 270.46 mi (435.27 km) |
| Gassino Torinese to Orzinuovi | 104.25 mi (167.78 km) |
| Gassino Torinese to Osimo | 301.87 mi (485.82 km) |
| Gassino Torinese to Ospitaletto | 113.13 mi (182.07 km) |
| Gassino Torinese to Ostuni | 578.94 mi (931.71 km) |
| Gassino Torinese to Ottaviano | 447.37 mi (719.97 km) |
| Gassino Torinese to Ovada | 52.48 mi (84.46 km) |
| Gassino Torinese to Ozieri | 319.45 mi (514.11 km) |
| Gassino Torinese to Paceco | 550.49 mi (885.93 km) |
| Gassino Torinese to Pachino | 693.55 mi (1,116.16 km) |
