| Idar-Oberstein to Oschersleben | 234.13 mi (376.80 km) |
| Idar-Oberstein to Osnabruck | 180.56 mi (290.59 km) |
| Idar-Oberstein to Ostbevern | 162.48 mi (261.49 km) |
| Idar-Oberstein to Osterburg | 286.51 mi (461.09 km) |
| Idar-Oberstein to Ostercappeln | 186.64 mi (300.37 km) |
| Idar-Oberstein to Osterhofen | 266.82 mi (429.40 km) |
| Idar-Oberstein to Osterholz-Scharmbeck | 250.49 mi (403.13 km) |
| Idar-Oberstein to Osternienburg | 251.11 mi (404.12 km) |
| Idar-Oberstein to Osterode | 189.59 mi (305.11 km) |
| Idar-Oberstein to Osterwieck | 215.21 mi (346.35 km) |
| Idar-Oberstein to Ostfildern | 110.48 mi (177.80 km) |
| Idar-Oberstein to Osthofen | 45.39 mi (73.04 km) |
| Idar-Oberstein to Ostrhauderfehn | 235.65 mi (379.24 km) |
| Idar-Oberstein to Ostringen | 71.38 mi (114.87 km) |
| Idar-Oberstein to Oststeinbek | 291.67 mi (469.40 km) |
