| Idar-Oberstein to Orthez | 575.68 mi (926.47 km) |
| Idar-Oberstein to Orvault | 442.17 mi (711.61 km) |
| Idar-Oberstein to Osny | 240.37 mi (386.83 km) |
| Idar-Oberstein to Ostwald | 82.19 mi (132.27 km) |
| Idar-Oberstein to Ouistreham | 340.94 mi (548.70 km) |
| Idar-Oberstein to Oullins | 299.63 mi (482.21 km) |
| Idar-Oberstein to Outreau | 261.96 mi (421.58 km) |
| Idar-Oberstein to Oyonnax | 250.73 mi (403.50 km) |
| Idar-Oberstein to Ozoir-la-Ferriere | 218.66 mi (351.91 km) |
| Idar-Oberstein to Pace | 426.10 mi (685.75 km) |
| Idar-Oberstein to Palaiseau | 238.81 mi (384.33 km) |
| Idar-Oberstein to Pamiers | 530.13 mi (853.16 km) |
| Idar-Oberstein to Panazol | 386.15 mi (621.45 km) |
| Idar-Oberstein to Pantin | 228.27 mi (367.37 km) |
| Idar-Oberstein to Paray-le-Monial | 269.16 mi (433.17 km) |
