| Foster City to Cernavoda | 6,481.95 mi (10,431.69 km) |
| Foster City to Chitila | 6,430.12 mi (10,348.28 km) |
| Foster City to Cisnadie | 6,316.69 mi (10,165.73 km) |
| Foster City to Cluj-Napoca | 6,239.38 mi (10,041.31 km) |
| Foster City to Codlea | 6,344.58 mi (10,210.62 km) |
| Foster City to Comanesti | 6,318.73 mi (10,169.02 km) |
| Foster City to Comarnic | 6,376.42 mi (10,261.85 km) |
| Foster City to Constanta | 6,504.43 mi (10,467.87 km) |
| Foster City to Corabia | 6,444.77 mi (10,371.85 km) |
| Foster City to Costesti | 6,397.03 mi (10,295.02 km) |
| Foster City to Covasna | 6,350.01 mi (10,219.36 km) |
| Foster City to Craiova | 6,395.06 mi (10,291.85 km) |
| Foster City to Cristuru Secuiesc | 6,299.05 mi (10,137.34 km) |
| Foster City to Cugir | 6,291.78 mi (10,125.63 km) |
| Foster City to Cumpana | 6,506.38 mi (10,471.01 km) |
