| Portlethen to Oerlinghausen | 556.96 mi (896.33 km) |
| Portlethen to Oestrich-Winkel | 639.83 mi (1,029.70 km) |
| Portlethen to Offenburg | 726.14 mi (1,168.61 km) |
| Portlethen to Oftersheim | 690.37 mi (1,111.04 km) |
| Portlethen to Ohrdruf | 675.67 mi (1,087.38 km) |
| Portlethen to Ohringen | 724.31 mi (1,165.67 km) |
| Portlethen to Olbernhau | 766.71 mi (1,233.91 km) |
| Portlethen to Olching | 829.46 mi (1,334.89 km) |
| Portlethen to Oldenburg | 489.55 mi (787.86 km) |
| Portlethen to Oldenburg in Holstein | 540.61 mi (870.02 km) |
| Portlethen to Olfen | 530.93 mi (854.45 km) |
| Portlethen to Olpe | 580.12 mi (933.62 km) |
| Portlethen to Olsberg | 581.62 mi (936.02 km) |
| Portlethen to Oranienburg | 677.04 mi (1,089.59 km) |
| Portlethen to Ortenberg | 649.52 mi (1,045.30 km) |
