| Allouez to Carmona | 4,140.42 mi (6,663.36 km) |
| Allouez to Cartagena | 4,341.27 mi (6,986.61 km) |
| Allouez to Cartama | 4,215.72 mi (6,784.55 km) |
| Allouez to Cartaya | 4,079.44 mi (6,565.22 km) |
| Allouez to Caspe | 4,233.91 mi (6,813.83 km) |
| Allouez to Cassa de la Selva | 4,328.74 mi (6,966.43 km) |
| Allouez to Castalla | 4,313.77 mi (6,942.34 km) |
| Allouez to Castellbisbal | 4,308.65 mi (6,934.10 km) |
| Allouez to Castelldefels | 4,316.48 mi (6,946.70 km) |
| Allouez to Castello de Ampurias | 4,321.83 mi (6,955.32 km) |
| Allouez to Castellon de la Plana | 4,284.53 mi (6,895.29 km) |
| Allouez to Castilleja de la Cuesta | 4,125.04 mi (6,638.60 km) |
| Allouez to Catarroja | 4,292.27 mi (6,907.74 km) |
| Allouez to Catral | 4,325.92 mi (6,961.89 km) |
| Allouez to Caudete | 4,295.57 mi (6,913.05 km) |
