| Idar-Oberstein to Ottendorf-Okrilla | 303.86 mi (489.01 km) |
| Idar-Oberstein to Ottersberg | 247.13 mi (397.72 km) |
| Idar-Oberstein to Ottobrunn | 228.05 mi (367.02 km) |
| Idar-Oberstein to Ottweiler | 24.70 mi (39.76 km) |
| Idar-Oberstein to Overath | 85.58 mi (137.73 km) |
| Idar-Oberstein to Oyten | 242.82 mi (390.77 km) |
| Idar-Oberstein to Paderborn | 152.30 mi (245.11 km) |
| Idar-Oberstein to Papenburg | 231.86 mi (373.14 km) |
| Idar-Oberstein to Parchim | 321.17 mi (516.87 km) |
| Idar-Oberstein to Pasewalk | 388.11 mi (624.60 km) |
| Idar-Oberstein to Passau | 288.84 mi (464.84 km) |
| Idar-Oberstein to Pattensen | 206.27 mi (331.96 km) |
| Idar-Oberstein to Pegnitz | 188.99 mi (304.15 km) |
| Idar-Oberstein to Peine | 220.43 mi (354.75 km) |
| Idar-Oberstein to Peissenberg | 215.99 mi (347.60 km) |
