| Horgen to Oerlinghausen | 324.75 mi (522.64 km) |
| Horgen to Oestrich-Winkel | 190.83 mi (307.11 km) |
| Horgen to Offenburg | 88.48 mi (142.40 km) |
| Horgen to Oftersheim | 145.37 mi (233.95 km) |
| Horgen to Ohrdruf | 264.32 mi (425.38 km) |
| Horgen to Ohringen | 139.85 mi (225.07 km) |
| Horgen to Olbernhau | 318.12 mi (511.96 km) |
| Horgen to Olching | 141.75 mi (228.13 km) |
| Horgen to Oldenburg | 406.43 mi (654.09 km) |
| Horgen to Oldenburg in Holstein | 496.01 mi (798.26 km) |
| Horgen to Olfen | 312.26 mi (502.54 km) |
| Horgen to Olpe | 261.40 mi (420.69 km) |
| Horgen to Olsberg | 282.18 mi (454.12 km) |
| Horgen to Oranienburg | 431.24 mi (694.02 km) |
| Horgen to Ortenberg | 214.44 mi (345.10 km) |
