| Johnston to Cividale del Friuli | 4,901.70 mi (7,888.52 km) |
| Johnston to Civita Castellana | 5,036.60 mi (8,105.63 km) |
| Johnston to Civitanova Marche | 5,040.72 mi (8,112.26 km) |
| Johnston to Civitavecchia | 5,022.05 mi (8,082.21 km) |
| Johnston to Civitella in Val di Chiana | 4,959.28 mi (7,981.18 km) |
| Johnston to Clusone | 4,783.32 mi (7,698.00 km) |
| Johnston to Coccaglio | 4,798.34 mi (7,722.18 km) |
| Johnston to Codigoro | 4,910.56 mi (7,902.78 km) |
| Johnston to Codogno | 4,805.66 mi (7,733.97 km) |
| Johnston to Codroipo | 4,891.44 mi (7,872.02 km) |
| Johnston to Cogoleto | 4,798.82 mi (7,722.95 km) |
| Johnston to Colle di Val d'Elsa | 4,937.79 mi (7,946.60 km) |
| Johnston to Colle Salvetti | 4,903.99 mi (7,892.21 km) |
| Johnston to Collecchio | 4,842.98 mi (7,794.02 km) |
| Johnston to Colleferro | 5,085.71 mi (8,184.66 km) |
