| Ploermel to Novi di Modena | 666.36 mi (1,072.41 km) |
| Ploermel to Novi Ligure | 575.99 mi (926.96 km) |
| Ploermel to Nuoro | 782.85 mi (1,259.88 km) |
| Ploermel to Occhiobello | 696.32 mi (1,120.62 km) |
| Ploermel to Oderzo | 717.85 mi (1,155.27 km) |
| Ploermel to Oggiono | 573.90 mi (923.61 km) |
| Ploermel to Olbia | 759.81 mi (1,222.79 km) |
| Ploermel to Oleggio | 545.79 mi (878.37 km) |
| Ploermel to Olgiate Comasco | 556.48 mi (895.57 km) |
| Ploermel to Olgiate Olona | 556.26 mi (895.22 km) |
| Ploermel to Omegna | 528.89 mi (851.16 km) |
| Ploermel to Opera | 577.57 mi (929.51 km) |
| Ploermel to Oppeano | 668.69 mi (1,076.15 km) |
| Ploermel to Orbassano | 513.63 mi (826.61 km) |
| Ploermel to Orbetello | 762.16 mi (1,226.57 km) |
