| Rio Tinto to Oerlinghausen | 1,101.76 mi (1,773.11 km) |
| Rio Tinto to Oestrich-Winkel | 1,002.57 mi (1,613.48 km) |
| Rio Tinto to Offenburg | 949.32 mi (1,527.79 km) |
| Rio Tinto to Oftersheim | 1,003.94 mi (1,615.68 km) |
| Rio Tinto to Ohrdruf | 1,135.41 mi (1,827.26 km) |
| Rio Tinto to Ohringen | 1,035.50 mi (1,666.48 km) |
| Rio Tinto to Olbernhau | 1,232.67 mi (1,983.79 km) |
| Rio Tinto to Olching | 1,085.92 mi (1,747.62 km) |
| Rio Tinto to Oldenburg | 1,136.65 mi (1,829.27 km) |
| Rio Tinto to Oldenburg in Holstein | 1,271.75 mi (2,046.69 km) |
| Rio Tinto to Olfen | 1,047.53 mi (1,685.84 km) |
| Rio Tinto to Olpe | 1,034.60 mi (1,665.02 km) |
| Rio Tinto to Olsberg | 1,070.84 mi (1,723.35 km) |
| Rio Tinto to Oranienburg | 1,293.53 mi (2,081.74 km) |
| Rio Tinto to Ortenberg | 1,055.28 mi (1,698.30 km) |
