| Altensteig to Oestrich-Winkel | 101.40 mi (163.19 km) |
| Altensteig to Offenburg | 31.82 mi (51.20 km) |
| Altensteig to Oftersheim | 54.19 mi (87.21 km) |
| Altensteig to Ohrdruf | 181.73 mi (292.46 km) |
| Altensteig to Ohringen | 58.75 mi (94.55 km) |
| Altensteig to Olbernhau | 255.75 mi (411.59 km) |
| Altensteig to Olching | 127.25 mi (204.79 km) |
| Altensteig to Oldenburg | 315.35 mi (507.51 km) |
| Altensteig to Oldenburg in Holstein | 406.73 mi (654.56 km) |
| Altensteig to Olfen | 222.93 mi (358.77 km) |
| Altensteig to Olpe | 171.40 mi (275.85 km) |
| Altensteig to Olsberg | 191.02 mi (307.42 km) |
| Altensteig to Oranienburg | 352.09 mi (566.63 km) |
| Altensteig to Ortenberg | 123.92 mi (199.42 km) |
| Altensteig to Oschatz | 274.21 mi (441.30 km) |
