| Bad Neuenahr-Ahrweiler to Oegstgeest | 160.77 mi (258.73 km) |
| Bad Neuenahr-Ahrweiler to Oirschot | 102.79 mi (165.43 km) |
| Bad Neuenahr-Ahrweiler to Oisterwijk | 109.77 mi (176.66 km) |
| Bad Neuenahr-Ahrweiler to Oldebroek | 141.61 mi (227.89 km) |
| Bad Neuenahr-Ahrweiler to Oldenzaal | 122.68 mi (197.43 km) |
| Bad Neuenahr-Ahrweiler to Ommen | 139.50 mi (224.51 km) |
| Bad Neuenahr-Ahrweiler to Oosterend | 175.68 mi (282.74 km) |
| Bad Neuenahr-Ahrweiler to Oosterhout | 123.87 mi (199.35 km) |
| Bad Neuenahr-Ahrweiler to Oosterwolde | 172.59 mi (277.75 km) |
| Bad Neuenahr-Ahrweiler to Oostzaan | 161.95 mi (260.63 km) |
| Bad Neuenahr-Ahrweiler to Opmeer | 175.45 mi (282.35 km) |
| Bad Neuenahr-Ahrweiler to Oss | 109.15 mi (175.67 km) |
| Bad Neuenahr-Ahrweiler to Oud-Beijerland | 146.73 mi (236.14 km) |
| Bad Neuenahr-Ahrweiler to Oudenbosch | 133.59 mi (214.99 km) |
| Bad Neuenahr-Ahrweiler to Oudewater | 140.60 mi (226.27 km) |
