| Simi Valley to Cocentaina | 6,033.39 mi (9,709.80 km) |
| Simi Valley to Coin | 5,954.51 mi (9,582.86 km) |
| Simi Valley to Colindres | 5,701.50 mi (9,175.67 km) |
| Simi Valley to Collado-Villalba | 5,805.22 mi (9,342.60 km) |
| Simi Valley to Colmenar Viejo | 5,813.64 mi (9,356.15 km) |
| Simi Valley to Colmenarejo | 5,808.17 mi (9,347.34 km) |
| Simi Valley to Conil de la Frontera | 5,916.08 mi (9,521.02 km) |
| Simi Valley to Consuegra | 5,874.50 mi (9,454.09 km) |
| Simi Valley to Corbera de Llobregat | 5,995.63 mi (9,649.04 km) |
| Simi Valley to Cordoba | 5,898.31 mi (9,492.41 km) |
| Simi Valley to Coria del Rio | 5,872.26 mi (9,450.49 km) |
| Simi Valley to Crevillente | 6,042.31 mi (9,724.16 km) |
| Simi Valley to Cuarte de Huerva | 5,881.17 mi (9,464.82 km) |
| Simi Valley to Cubellas | 5,996.12 mi (9,649.83 km) |
| Simi Valley to Cuellar | 5,758.48 mi (9,267.37 km) |
