| Altensteig to Oegstgeest | 308.11 mi (495.85 km) |
| Altensteig to Oirschot | 249.00 mi (400.72 km) |
| Altensteig to Oisterwijk | 256.18 mi (412.28 km) |
| Altensteig to Oldebroek | 292.15 mi (470.17 km) |
| Altensteig to Oldenzaal | 268.00 mi (431.31 km) |
| Altensteig to Ommen | 288.01 mi (463.51 km) |
| Altensteig to Oosterend | 324.66 mi (522.48 km) |
| Altensteig to Oosterhout | 268.58 mi (432.24 km) |
| Altensteig to Oosterwolde | 320.57 mi (515.91 km) |
| Altensteig to Oostzaan | 311.97 mi (502.07 km) |
| Altensteig to Opmeer | 326.13 mi (524.85 km) |
| Altensteig to Oss | 258.70 mi (416.34 km) |
| Altensteig to Oud-Beijerland | 290.41 mi (467.37 km) |
| Altensteig to Oudenbosch | 275.18 mi (442.86 km) |
| Altensteig to Oudewater | 288.69 mi (464.60 km) |
