| Pianoro to Octeville | 709.27 mi (1,141.46 km) |
| Pianoro to Oignies | 572.70 mi (921.68 km) |
| Pianoro to Oissel | 592.04 mi (952.80 km) |
| Pianoro to Olivet | 511.25 mi (822.78 km) |
| Pianoro to Ollioules | 286.88 mi (461.69 km) |
| Pianoro to Olonne-sur-Mer | 651.51 mi (1,048.50 km) |
| Pianoro to Oloron-Sainte-Marie | 600.63 mi (966.63 km) |
| Pianoro to Onet Village | 431.42 mi (694.31 km) |
| Pianoro to Onnaing | 549.91 mi (885.00 km) |
| Pianoro to Orange | 323.16 mi (520.08 km) |
| Pianoro to Orchies | 565.11 mi (909.46 km) |
| Pianoro to Orleans | 512.01 mi (824.01 km) |
| Pianoro to Orly | 520.18 mi (837.15 km) |
| Pianoro to Ormesson-sur-Marne | 516.14 mi (830.65 km) |
| Pianoro to Orsay | 526.50 mi (847.32 km) |
