| Grugliasco to Oegstgeest | 511.61 mi (823.36 km) |
| Grugliasco to Oirschot | 456.52 mi (734.69 km) |
| Grugliasco to Oisterwijk | 463.16 mi (745.38 km) |
| Grugliasco to Oldebroek | 515.70 mi (829.94 km) |
| Grugliasco to Oldenzaal | 501.69 mi (807.40 km) |
| Grugliasco to Ommen | 517.34 mi (832.58 km) |
| Grugliasco to Oosterend | 552.52 mi (889.19 km) |
| Grugliasco to Oosterhout | 471.07 mi (758.11 km) |
| Grugliasco to Oosterwolde | 550.45 mi (885.86 km) |
| Grugliasco to Oostzaan | 523.39 mi (842.31 km) |
| Grugliasco to Opmeer | 540.57 mi (869.96 km) |
| Grugliasco to Oss | 472.33 mi (760.15 km) |
| Grugliasco to Oud-Beijerland | 488.38 mi (785.98 km) |
| Grugliasco to Oudenbosch | 471.79 mi (759.28 km) |
| Grugliasco to Oudewater | 495.77 mi (797.87 km) |
