| Fountain Valley to Cividale del Friuli | 6,144.88 mi (9,889.23 km) |
| Fountain Valley to Civita Castellana | 6,317.30 mi (10,166.72 km) |
| Fountain Valley to Civitanova Marche | 6,305.43 mi (10,147.60 km) |
| Fountain Valley to Civitavecchia | 6,307.86 mi (10,151.53 km) |
| Fountain Valley to Civitella in Val di Chiana | 6,235.26 mi (10,034.68 km) |
| Fountain Valley to Clusone | 6,049.23 mi (9,735.29 km) |
| Fountain Valley to Coccaglio | 6,066.80 mi (9,763.57 km) |
| Fountain Valley to Codigoro | 6,172.59 mi (9,933.83 km) |
| Fountain Valley to Codogno | 6,079.06 mi (9,783.30 km) |
| Fountain Valley to Codroipo | 6,138.64 mi (9,879.19 km) |
| Fountain Valley to Cogoleto | 6,084.42 mi (9,791.93 km) |
| Fountain Valley to Colle di Val d'Elsa | 6,217.31 mi (10,005.80 km) |
| Fountain Valley to Colle Salvetti | 6,185.66 mi (9,954.86 km) |
| Fountain Valley to Collecchio | 6,116.85 mi (9,844.12 km) |
| Fountain Valley to Colleferro | 6,367.12 mi (10,246.89 km) |
