| Johnston to Cernavoda | 5,486.86 mi (8,830.25 km) |
| Johnston to Chitila | 5,411.74 mi (8,709.35 km) |
| Johnston to Cisnadie | 5,290.13 mi (8,513.64 km) |
| Johnston to Cluj-Napoca | 5,218.38 mi (8,398.17 km) |
| Johnston to Codlea | 5,332.98 mi (8,582.60 km) |
| Johnston to Comanesti | 5,327.29 mi (8,573.44 km) |
| Johnston to Comarnic | 5,362.10 mi (8,629.47 km) |
| Johnston to Constanta | 5,515.02 mi (8,875.57 km) |
| Johnston to Corabia | 5,400.62 mi (8,691.46 km) |
| Johnston to Costesti | 5,367.28 mi (8,637.80 km) |
| Johnston to Covasna | 5,348.93 mi (8,608.26 km) |
| Johnston to Craiova | 5,349.08 mi (8,608.51 km) |
| Johnston to Cristuru Secuiesc | 5,289.35 mi (8,512.38 km) |
| Johnston to Cugir | 5,257.66 mi (8,461.38 km) |
| Johnston to Cumpana | 5,515.42 mi (8,876.20 km) |
