| Karlsruhe to Novi di Modena | 307.75 mi (495.28 km) |
| Karlsruhe to Novi Ligure | 294.20 mi (473.47 km) |
| Karlsruhe to Nuoro | 602.31 mi (969.33 km) |
| Karlsruhe to Occhiobello | 319.63 mi (514.39 km) |
| Karlsruhe to Oderzo | 293.73 mi (472.71 km) |
| Karlsruhe to Oggiono | 227.23 mi (365.69 km) |
| Karlsruhe to Olbia | 561.68 mi (903.94 km) |
| Karlsruhe to Oleggio | 235.80 mi (379.48 km) |
| Karlsruhe to Olgiate Comasco | 224.43 mi (361.19 km) |
| Karlsruhe to Olgiate Olona | 234.33 mi (377.12 km) |
| Karlsruhe to Omegna | 216.34 mi (348.16 km) |
| Karlsruhe to Opera | 253.41 mi (407.82 km) |
| Karlsruhe to Oppeano | 287.58 mi (462.82 km) |
| Karlsruhe to Orbassano | 279.50 mi (449.81 km) |
| Karlsruhe to Orbetello | 473.62 mi (762.22 km) |
