| Glenn Dale to Cividale del Friuli | 4,365.88 mi (7,026.20 km) |
| Glenn Dale to Civita Castellana | 4,453.30 mi (7,166.90 km) |
| Glenn Dale to Civitanova Marche | 4,475.67 mi (7,202.90 km) |
| Glenn Dale to Civitavecchia | 4,433.23 mi (7,134.60 km) |
| Glenn Dale to Civitella in Val di Chiana | 4,384.09 mi (7,055.51 km) |
| Glenn Dale to Clusone | 4,226.13 mi (6,801.30 km) |
| Glenn Dale to Coccaglio | 4,237.62 mi (6,819.79 km) |
| Glenn Dale to Codigoro | 4,353.17 mi (7,005.76 km) |
| Glenn Dale to Codogno | 4,238.90 mi (6,821.85 km) |
| Glenn Dale to Codroipo | 4,351.54 mi (7,003.13 km) |
| Glenn Dale to Cogoleto | 4,217.74 mi (6,787.80 km) |
| Glenn Dale to Colle di Val d'Elsa | 4,359.18 mi (7,015.43 km) |
| Glenn Dale to Colle Salvetti | 4,324.00 mi (6,958.81 km) |
| Glenn Dale to Collecchio | 4,274.31 mi (6,878.83 km) |
| Glenn Dale to Colleferro | 4,499.96 mi (7,241.99 km) |
