| Boulder to Ondokuzmayis | 6,304.44 mi (10,146.02 km) |
| Boulder to Ordu | 6,379.62 mi (10,267.00 km) |
| Boulder to Ortahisar | 6,446.90 mi (10,375.29 km) |
| Boulder to Ortakent | 6,317.35 mi (10,166.80 km) |
| Boulder to Ortaklar | 6,279.24 mi (10,105.46 km) |
| Boulder to Ortakoy | 6,417.82 mi (10,328.48 km) |
| Boulder to Ortakoy | 6,357.26 mi (10,231.02 km) |
| Boulder to Osmaneli | 6,211.29 mi (9,996.11 km) |
| Boulder to Osmaniye | 6,576.96 mi (10,584.59 km) |
| Boulder to Ozdere | 6,260.16 mi (10,074.76 km) |
| Boulder to Palu | 6,569.59 mi (10,572.73 km) |
| Boulder to Pamukkale | 6,326.24 mi (10,181.10 km) |
| Boulder to Patnos | 6,602.52 mi (10,625.73 km) |
| Boulder to Pazar | 6,385.10 mi (10,275.83 km) |
| Boulder to Pazarcik | 6,579.18 mi (10,588.16 km) |
