| Illertissen to Oegstgeest | 369.67 mi (594.93 km) |
| Illertissen to Oirschot | 311.09 mi (500.65 km) |
| Illertissen to Oisterwijk | 318.20 mi (512.09 km) |
| Illertissen to Oldebroek | 345.69 mi (556.33 km) |
| Illertissen to Oldenzaal | 315.53 mi (507.79 km) |
| Illertissen to Ommen | 338.10 mi (544.12 km) |
| Illertissen to Oosterend | 374.57 mi (602.82 km) |
| Illertissen to Oosterhout | 331.63 mi (533.70 km) |
| Illertissen to Oosterwolde | 369.24 mi (594.24 km) |
| Illertissen to Oostzaan | 370.60 mi (596.42 km) |
| Illertissen to Opmeer | 383.12 mi (616.57 km) |
| Illertissen to Oss | 318.16 mi (512.04 km) |
| Illertissen to Oud-Beijerland | 354.11 mi (569.89 km) |
| Illertissen to Oudenbosch | 339.68 mi (546.67 km) |
| Illertissen to Oudewater | 349.61 mi (562.64 km) |
