| Fagnano Olona to Oerlinghausen | 435.38 mi (700.68 km) |
| Fagnano Olona to Oestrich-Winkel | 302.08 mi (486.16 km) |
| Fagnano Olona to Offenburg | 198.38 mi (319.26 km) |
| Fagnano Olona to Oftersheim | 256.25 mi (412.40 km) |
| Fagnano Olona to Ohrdruf | 366.78 mi (590.27 km) |
| Fagnano Olona to Ohringen | 245.91 mi (395.76 km) |
| Fagnano Olona to Olbernhau | 401.96 mi (646.90 km) |
| Fagnano Olona to Olching | 209.73 mi (337.53 km) |
| Fagnano Olona to Oldenburg | 517.45 mi (832.76 km) |
| Fagnano Olona to Oldenburg in Holstein | 603.13 mi (970.64 km) |
| Fagnano Olona to Olfen | 423.43 mi (681.44 km) |
| Fagnano Olona to Olpe | 372.67 mi (599.76 km) |
| Fagnano Olona to Olsberg | 393.07 mi (632.58 km) |
| Fagnano Olona to Oranienburg | 527.70 mi (849.25 km) |
| Fagnano Olona to Ortenberg | 324.10 mi (521.59 km) |
