| Boulder to Civril | 6,322.37 mi (10,174.87 km) |
| Boulder to Cizre | 6,707.26 mi (10,794.29 km) |
| Boulder to Cobanlar | 6,329.36 mi (10,186.12 km) |
| Boulder to Corlu | 6,101.37 mi (9,819.20 km) |
| Boulder to Corum | 6,333.47 mi (10,192.73 km) |
| Boulder to Cukurca | 6,744.56 mi (10,854.32 km) |
| Boulder to Cukurcayir | 6,424.06 mi (10,338.52 km) |
| Boulder to Cumayeri | 6,206.90 mi (9,989.05 km) |
| Boulder to Cumra | 6,452.27 mi (10,383.92 km) |
| Boulder to Cungus | 6,584.12 mi (10,596.11 km) |
| Boulder to Dargecit | 6,683.25 mi (10,755.65 km) |
| Boulder to Davutlar | 6,281.66 mi (10,109.35 km) |
| Boulder to Demirozu | 6,477.56 mi (10,424.62 km) |
| Boulder to Demre | 6,449.01 mi (10,378.67 km) |
| Boulder to Denizciler | 6,601.86 mi (10,624.66 km) |
