| Langenfeld to Novi di Modena | 467.00 mi (751.56 km) |
| Langenfeld to Novi Ligure | 447.36 mi (719.96 km) |
| Langenfeld to Nuoro | 754.90 mi (1,214.90 km) |
| Langenfeld to Occhiobello | 478.33 mi (769.81 km) |
| Langenfeld to Oderzo | 447.43 mi (720.07 km) |
| Langenfeld to Oggiono | 384.51 mi (618.81 km) |
| Langenfeld to Olbia | 715.18 mi (1,150.96 km) |
| Langenfeld to Oleggio | 388.89 mi (625.86 km) |
| Langenfeld to Olgiate Comasco | 379.88 mi (611.35 km) |
| Langenfeld to Olgiate Olona | 389.08 mi (626.16 km) |
| Langenfeld to Omegna | 368.03 mi (592.28 km) |
| Langenfeld to Opera | 409.58 mi (659.16 km) |
| Langenfeld to Oppeano | 446.49 mi (718.55 km) |
| Langenfeld to Orbassano | 422.98 mi (680.73 km) |
| Langenfeld to Orbetello | 632.28 mi (1,017.56 km) |
