| Siedlce to Noventa Vicentina | 681.05 mi (1,096.04 km) |
| Siedlce to Novi di Modena | 721.69 mi (1,161.46 km) |
| Siedlce to Novi Ligure | 800.03 mi (1,287.52 km) |
| Siedlce to Nuoro | 1,022.62 mi (1,645.74 km) |
| Siedlce to Occhiobello | 698.33 mi (1,123.85 km) |
| Siedlce to Oderzo | 624.49 mi (1,005.01 km) |
| Siedlce to Oggiono | 731.61 mi (1,177.41 km) |
| Siedlce to Olbia | 983.09 mi (1,582.13 km) |
| Siedlce to Oleggio | 765.92 mi (1,232.62 km) |
| Siedlce to Olgiate Comasco | 745.47 mi (1,199.71 km) |
| Siedlce to Olgiate Olona | 755.33 mi (1,215.58 km) |
| Siedlce to Omegna | 761.74 mi (1,225.90 km) |
| Siedlce to Opera | 755.00 mi (1,215.06 km) |
| Siedlce to Oppeano | 691.65 mi (1,113.10 km) |
| Siedlce to Orbassano | 832.96 mi (1,340.52 km) |
