| Duchcov to Novi di Modena | 416.03 mi (669.53 km) |
| Duchcov to Novi Ligure | 464.86 mi (748.13 km) |
| Duchcov to Nuoro | 741.91 mi (1,193.99 km) |
| Duchcov to Occhiobello | 405.23 mi (652.16 km) |
| Duchcov to Oderzo | 338.20 mi (544.27 km) |
| Duchcov to Oggiono | 389.63 mi (627.05 km) |
| Duchcov to Olbia | 699.62 mi (1,125.92 km) |
| Duchcov to Oleggio | 418.34 mi (673.25 km) |
| Duchcov to Olgiate Comasco | 399.06 mi (642.23 km) |
| Duchcov to Olgiate Olona | 410.00 mi (659.83 km) |
| Duchcov to Omegna | 408.41 mi (657.27 km) |
| Duchcov to Opera | 416.92 mi (670.97 km) |
| Duchcov to Oppeano | 385.12 mi (619.79 km) |
| Duchcov to Orbassano | 481.88 mi (775.52 km) |
| Duchcov to Orbetello | 576.74 mi (928.17 km) |
