| Blackfoot to Oerlinghausen | 4,980.19 mi (8,014.85 km) |
| Blackfoot to Oestrich-Winkel | 5,063.62 mi (8,149.10 km) |
| Blackfoot to Offenburg | 5,141.67 mi (8,274.73 km) |
| Blackfoot to Oftersheim | 5,113.61 mi (8,229.56 km) |
| Blackfoot to Ohrdruf | 5,097.78 mi (8,204.09 km) |
| Blackfoot to Ohringen | 5,149.28 mi (8,286.96 km) |
| Blackfoot to Olbernhau | 5,177.52 mi (8,332.42 km) |
| Blackfoot to Olching | 5,255.22 mi (8,457.46 km) |
| Blackfoot to Oldenburg | 4,906.55 mi (7,896.33 km) |
| Blackfoot to Oldenburg in Holstein | 4,917.53 mi (7,914.01 km) |
| Blackfoot to Olfen | 4,956.89 mi (7,977.35 km) |
| Blackfoot to Olpe | 5,005.95 mi (8,056.30 km) |
| Blackfoot to Olsberg | 5,007.17 mi (8,058.26 km) |
| Blackfoot to Oranienburg | 5,061.37 mi (8,145.49 km) |
| Blackfoot to Ortenberg | 5,075.49 mi (8,168.22 km) |
