| South Valley to Oerlinghausen | 5,275.90 mi (8,490.74 km) |
| South Valley to Oestrich-Winkel | 5,341.75 mi (8,596.72 km) |
| South Valley to Offenburg | 5,408.11 mi (8,703.51 km) |
| South Valley to Oftersheim | 5,389.88 mi (8,674.17 km) |
| South Valley to Ohrdruf | 5,394.73 mi (8,681.98 km) |
| South Valley to Ohringen | 5,428.71 mi (8,736.67 km) |
| South Valley to Olbernhau | 5,485.58 mi (8,828.20 km) |
| South Valley to Olching | 5,536.50 mi (8,910.14 km) |
| South Valley to Oldenburg | 5,208.95 mi (8,382.99 km) |
| South Valley to Oldenburg in Holstein | 5,239.66 mi (8,432.42 km) |
| South Valley to Olfen | 5,245.01 mi (8,441.03 km) |
| South Valley to Olpe | 5,290.87 mi (8,514.83 km) |
| South Valley to Olsberg | 5,297.52 mi (8,525.53 km) |
| South Valley to Oranienburg | 5,383.06 mi (8,663.19 km) |
| South Valley to Ortenberg | 5,361.20 mi (8,628.02 km) |
