| Powell to Cocentaina | 4,236.30 mi (6,817.67 km) |
| Powell to Coin | 4,103.67 mi (6,604.21 km) |
| Powell to Colindres | 3,945.69 mi (6,349.98 km) |
| Powell to Collado-Villalba | 4,007.17 mi (6,448.91 km) |
| Powell to Colmenar Viejo | 4,017.58 mi (6,465.68 km) |
| Powell to Colmenarejo | 4,009.10 mi (6,452.03 km) |
| Powell to Conil de la Frontera | 4,052.76 mi (6,522.28 km) |
| Powell to Consuegra | 4,064.13 mi (6,540.58 km) |
| Powell to Corbera de Llobregat | 4,252.12 mi (6,843.12 km) |
| Powell to Cordoba | 4,061.10 mi (6,535.71 km) |
| Powell to Coria del Rio | 4,020.24 mi (6,469.96 km) |
| Powell to Crevillente | 4,236.40 mi (6,817.83 km) |
| Powell to Cuarte de Huerva | 4,118.00 mi (6,627.27 km) |
| Powell to Cubellas | 4,247.68 mi (6,835.98 km) |
| Powell to Cuellar | 3,968.56 mi (6,386.78 km) |
