| Fountain to Oerlinghausen | 5,004.95 mi (8,054.68 km) |
| Fountain to Oestrich-Winkel | 5,072.80 mi (8,163.88 km) |
| Fountain to Offenburg | 5,140.65 mi (8,273.07 km) |
| Fountain to Oftersheim | 5,121.20 mi (8,241.77 km) |
| Fountain to Ohrdruf | 5,123.77 mi (8,245.90 km) |
| Fountain to Ohringen | 5,159.71 mi (8,303.75 km) |
| Fountain to Olbernhau | 5,213.61 mi (8,390.49 km) |
| Fountain to Olching | 5,267.40 mi (8,477.07 km) |
| Fountain to Oldenburg | 4,937.25 mi (7,945.74 km) |
| Fountain to Oldenburg in Holstein | 4,966.23 mi (7,992.37 km) |
| Fountain to Olfen | 4,974.82 mi (8,006.20 km) |
| Fountain to Olpe | 5,021.08 mi (8,080.66 km) |
| Fountain to Olsberg | 5,027.15 mi (8,090.42 km) |
| Fountain to Oranienburg | 5,109.77 mi (8,223.39 km) |
| Fountain to Ortenberg | 5,091.41 mi (8,193.83 km) |
