| Mission Viejo to Cividale del Friuli | 6,141.94 mi (9,884.50 km) |
| Mission Viejo to Civita Castellana | 6,313.43 mi (10,160.48 km) |
| Mission Viejo to Civitanova Marche | 6,301.99 mi (10,142.07 km) |
| Mission Viejo to Civitavecchia | 6,303.84 mi (10,145.05 km) |
| Mission Viejo to Civitella in Val di Chiana | 6,231.48 mi (10,028.60 km) |
| Mission Viejo to Clusone | 6,045.66 mi (9,729.55 km) |
| Mission Viejo to Coccaglio | 6,063.17 mi (9,757.73 km) |
| Mission Viejo to Codigoro | 6,169.17 mi (9,928.33 km) |
| Mission Viejo to Codogno | 6,075.30 mi (9,777.25 km) |
| Mission Viejo to Codroipo | 6,135.60 mi (9,874.29 km) |
| Mission Viejo to Cogoleto | 6,080.32 mi (9,785.34 km) |
| Mission Viejo to Colle di Val d'Elsa | 6,213.43 mi (9,999.55 km) |
| Mission Viejo to Colle Salvetti | 6,181.71 mi (9,948.50 km) |
| Mission Viejo to Collecchio | 6,113.09 mi (9,838.07 km) |
| Mission Viejo to Colleferro | 6,363.24 mi (10,240.65 km) |
