| Suisun City to Cividale del Friuli | 5,988.51 mi (9,637.57 km) |
| Suisun City to Civita Castellana | 6,178.70 mi (9,943.66 km) |
| Suisun City to Civitanova Marche | 6,158.19 mi (9,910.65 km) |
| Suisun City to Civitavecchia | 6,172.28 mi (9,933.33 km) |
| Suisun City to Civitella in Val di Chiana | 6,094.97 mi (9,808.90 km) |
| Suisun City to Clusone | 5,905.67 mi (9,504.26 km) |
| Suisun City to Coccaglio | 5,924.39 mi (9,534.39 km) |
| Suisun City to Codigoro | 6,025.51 mi (9,697.13 km) |
| Suisun City to Codogno | 5,939.18 mi (9,558.19 km) |
| Suisun City to Codroipo | 5,984.35 mi (9,630.87 km) |
| Suisun City to Cogoleto | 5,951.30 mi (9,577.70 km) |
| Suisun City to Colle di Val d'Elsa | 6,079.20 mi (9,783.53 km) |
| Suisun City to Colle Salvetti | 6,049.13 mi (9,735.14 km) |
| Suisun City to Collecchio | 5,976.79 mi (9,618.72 km) |
| Suisun City to Colleferro | 6,228.35 mi (10,023.56 km) |
