| Rock Springs to Oerlinghausen | 4,981.58 mi (8,017.07 km) |
| Rock Springs to Oestrich-Winkel | 5,059.19 mi (8,141.98 km) |
| Rock Springs to Offenburg | 5,133.49 mi (8,261.56 km) |
| Rock Springs to Oftersheim | 5,108.68 mi (8,221.62 km) |
| Rock Springs to Ohrdruf | 5,099.89 mi (8,207.48 km) |
| Rock Springs to Ohringen | 5,145.51 mi (8,280.90 km) |
| Rock Springs to Olbernhau | 5,183.68 mi (8,342.33 km) |
| Rock Springs to Olching | 5,252.35 mi (8,452.84 km) |
| Rock Springs to Oldenburg | 4,910.07 mi (7,901.99 km) |
| Rock Springs to Oldenburg in Holstein | 4,928.01 mi (7,930.86 km) |
| Rock Springs to Olfen | 4,955.60 mi (7,975.27 km) |
| Rock Springs to Olpe | 5,003.69 mi (8,052.66 km) |
| Rock Springs to Olsberg | 5,006.77 mi (8,057.63 km) |
| Rock Springs to Oranienburg | 5,072.04 mi (8,162.65 km) |
| Rock Springs to Ortenberg | 5,073.68 mi (8,165.30 km) |
