| Alton to Cernavoda | 1,416.67 mi (2,279.91 km) |
| Alton to Chitila | 1,322.97 mi (2,129.11 km) |
| Alton to Cisnadie | 1,204.74 mi (1,938.85 km) |
| Alton to Cluj-Napoca | 1,148.64 mi (1,848.55 km) |
| Alton to Codlea | 1,260.79 mi (2,029.04 km) |
| Alton to Comanesti | 1,282.11 mi (2,063.36 km) |
| Alton to Comarnic | 1,283.25 mi (2,065.19 km) |
| Alton to Constanta | 1,448.31 mi (2,330.83 km) |
| Alton to Corabia | 1,286.38 mi (2,070.23 km) |
| Alton to Costesti | 1,270.39 mi (2,044.50 km) |
| Alton to Covasna | 1,288.00 mi (2,072.83 km) |
| Alton to Craiova | 1,237.04 mi (1,990.83 km) |
| Alton to Cristuru Secuiesc | 1,225.06 mi (1,971.54 km) |
| Alton to Cugir | 1,166.87 mi (1,877.90 km) |
| Alton to Cumpana | 1,446.85 mi (2,328.47 km) |
