| Donostia to Carlsbad (New Mexico) | 5,270.35 mi (8,481.80 km) |
| Donostia to Carmel (Indiana) | 4,157.67 mi (6,691.12 km) |
| Donostia to Carmichael (California) | 5,623.16 mi (9,049.61 km) |
| Donostia to Carney (Maryland) | 3,743.02 mi (6,023.81 km) |
| Donostia to Carnot-Moon (Pennsylvania) | 3,872.62 mi (6,232.38 km) |
| Donostia to Carol Stream (Illinois) | 4,169.85 mi (6,710.72 km) |
| Donostia to Carolina (Puerto Rico) | 4,057.05 mi (6,529.20 km) |
| Donostia to Carolina Forest (South Carolina) | 4,062.56 mi (6,538.06 km) |
| Donostia to Carpentersville (Illinois) | 4,168.89 mi (6,709.18 km) |
| Donostia to Carpinteria (California) | 5,781.75 mi (9,304.82 km) |
| Donostia to Carrboro (North Carolina) | 3,988.37 mi (6,418.66 km) |
| Donostia to Carroll (Iowa) | 4,447.72 mi (7,157.92 km) |
| Donostia to Carrollton (Georgia) | 4,360.56 mi (7,017.64 km) |
| Donostia to Carrollton (Texas) | 4,923.83 mi (7,924.14 km) |
| Donostia to Carrollwood (Florida) | 4,466.29 mi (7,187.80 km) |
