| Siedlce to Oerlinghausen | 577.18 mi (928.88 km) |
| Siedlce to Oestrich-Winkel | 636.10 mi (1,023.71 km) |
| Siedlce to Offenburg | 680.80 mi (1,095.64 km) |
| Siedlce to Oftersheim | 627.36 mi (1,009.64 km) |
| Siedlce to Ohrdruf | 504.28 mi (811.57 km) |
| Siedlce to Ohringen | 594.49 mi (956.74 km) |
| Siedlce to Olbernhau | 398.53 mi (641.37 km) |
| Siedlce to Olching | 555.91 mi (894.66 km) |
| Siedlce to Oldenburg | 592.09 mi (952.88 km) |
| Siedlce to Oldenburg in Holstein | 492.90 mi (793.24 km) |
| Siedlce to Olfen | 633.79 mi (1,019.98 km) |
| Siedlce to Olpe | 623.76 mi (1,003.85 km) |
| Siedlce to Olsberg | 591.47 mi (951.88 km) |
| Siedlce to Oranienburg | 382.27 mi (615.20 km) |
| Siedlce to Ortenberg | 584.06 mi (939.95 km) |
