| Castro Valley to Cabestany | 5,897.35 mi (9,490.87 km) |
| Castro Valley to Cabries | 5,935.71 mi (9,552.61 km) |
| Castro Valley to Cachan | 5,559.23 mi (8,946.71 km) |
| Castro Valley to Caen | 5,456.85 mi (8,781.96 km) |
| Castro Valley to Cagnes-sur-Mer | 5,978.73 mi (9,621.84 km) |
| Castro Valley to Cahors | 5,755.91 mi (9,263.25 km) |
| Castro Valley to Calais | 5,433.97 mi (8,745.12 km) |
| Castro Valley to Caluire-et-Cuire | 5,793.21 mi (9,323.27 km) |
| Castro Valley to Cambrai | 5,514.00 mi (8,873.92 km) |
| Castro Valley to Canet-en-Roussillon | 5,898.16 mi (9,492.17 km) |
| Castro Valley to Cannes | 5,980.71 mi (9,625.03 km) |
| Castro Valley to Canteleu | 5,486.19 mi (8,829.17 km) |
| Castro Valley to Capbreton | 5,700.57 mi (9,174.18 km) |
| Castro Valley to Carcassonne | 5,850.07 mi (9,414.77 km) |
| Castro Valley to Carmaux | 5,800.04 mi (9,334.26 km) |
