| Notodden to Oberkirch | 767.95 mi (1,235.90 km) |
| Notodden to Obernburg am Main | 676.38 mi (1,088.54 km) |
| Notodden to Obernkirchen | 508.74 mi (818.74 km) |
| Notodden to Oberschleissheim | 792.02 mi (1,274.64 km) |
| Notodden to Oberstdorf | 845.45 mi (1,360.62 km) |
| Notodden to Obertraubling | 746.30 mi (1,201.05 km) |
| Notodden to Obertshausen | 660.87 mi (1,063.57 km) |
| Notodden to Oberursel | 651.73 mi (1,048.86 km) |
| Notodden to Ochsenfurt | 690.38 mi (1,111.06 km) |
| Notodden to Ochsenhausen | 799.11 mi (1,286.04 km) |
| Notodden to Ochtrup | 518.69 mi (834.75 km) |
| Notodden to Odenthal | 599.43 mi (964.69 km) |
| Notodden to Oelde | 540.16 mi (869.31 km) |
| Notodden to Oelsnitz | 647.19 mi (1,041.54 km) |
| Notodden to Oer-Erkenschwick | 556.97 mi (896.35 km) |
