| Grugliasco to Octeville | 533.75 mi (858.98 km) |
| Grugliasco to Oignies | 429.44 mi (691.11 km) |
| Grugliasco to Oissel | 423.86 mi (682.13 km) |
| Grugliasco to Olivet | 331.99 mi (534.28 km) |
| Grugliasco to Ollioules | 158.51 mi (255.10 km) |
| Grugliasco to Olonne-sur-Mer | 461.37 mi (742.50 km) |
| Grugliasco to Oloron-Sainte-Marie | 425.80 mi (685.25 km) |
| Grugliasco to Onet Village | 249.42 mi (401.41 km) |
| Grugliasco to Onnaing | 411.32 mi (661.96 km) |
| Grugliasco to Orange | 150.54 mi (242.28 km) |
| Grugliasco to Orchies | 424.14 mi (682.59 km) |
| Grugliasco to Orleans | 333.14 mi (536.14 km) |
| Grugliasco to Orly | 352.55 mi (567.38 km) |
| Grugliasco to Ormesson-sur-Marne | 349.88 mi (563.08 km) |
| Grugliasco to Orsay | 357.18 mi (574.83 km) |
