| Palazzolo Acreide to Octeville | 1,196.85 mi (1,926.15 km) |
| Palazzolo Acreide to Oignies | 1,097.55 mi (1,766.33 km) |
| Palazzolo Acreide to Oissel | 1,093.58 mi (1,759.95 km) |
| Palazzolo Acreide to Olivet | 995.41 mi (1,601.95 km) |
| Palazzolo Acreide to Ollioules | 636.03 mi (1,023.59 km) |
| Palazzolo Acreide to Olonne-sur-Mer | 1,076.22 mi (1,732.01 km) |
| Palazzolo Acreide to Oloron-Sainte-Marie | 920.41 mi (1,481.26 km) |
| Palazzolo Acreide to Onet Village | 817.16 mi (1,315.09 km) |
| Palazzolo Acreide to Onnaing | 1,077.26 mi (1,733.69 km) |
| Palazzolo Acreide to Orange | 719.71 mi (1,158.25 km) |
| Palazzolo Acreide to Orchies | 1,091.27 mi (1,756.23 km) |
| Palazzolo Acreide to Orleans | 996.97 mi (1,604.48 km) |
| Palazzolo Acreide to Orly | 1,023.06 mi (1,646.45 km) |
| Palazzolo Acreide to Ormesson-sur-Marne | 1,020.74 mi (1,642.72 km) |
| Palazzolo Acreide to Orsay | 1,027.11 mi (1,652.97 km) |
