| Oak Ridge to Ondokuzmayis | 5,891.17 mi (9,480.92 km) |
| Oak Ridge to Ordu | 5,981.63 mi (9,626.50 km) |
| Oak Ridge to Ortahisar | 5,986.88 mi (9,634.96 km) |
| Oak Ridge to Ortakent | 5,755.01 mi (9,261.79 km) |
| Oak Ridge to Ortaklar | 5,728.45 mi (9,219.05 km) |
| Oak Ridge to Ortakoy | 5,949.54 mi (9,574.87 km) |
| Oak Ridge to Ortakoy | 5,920.84 mi (9,528.67 km) |
| Oak Ridge to Osmaneli | 5,717.09 mi (9,200.77 km) |
| Oak Ridge to Osmaniye | 6,115.98 mi (9,842.72 km) |
| Oak Ridge to Ozdere | 5,707.05 mi (9,184.61 km) |
| Oak Ridge to Palu | 6,171.76 mi (9,932.49 km) |
| Oak Ridge to Pamukkale | 5,793.24 mi (9,323.31 km) |
| Oak Ridge to Patnos | 6,247.07 mi (10,053.68 km) |
| Oak Ridge to Pazar | 5,960.58 mi (9,592.63 km) |
| Oak Ridge to Pazarcik | 6,135.44 mi (9,874.03 km) |
