| Donostia to Clermont (Florida) | 4,407.98 mi (7,093.96 km) |
| Donostia to Cleveland (Mississippi) | 4,613.83 mi (7,425.24 km) |
| Donostia to Cleveland (Ohio) | 3,904.18 mi (6,283.16 km) |
| Donostia to Cleveland (Tennessee) | 4,286.40 mi (6,898.29 km) |
| Donostia to Cleveland Heights (Ohio) | 3,897.74 mi (6,272.81 km) |
| Donostia to Cliffside Park (New Jersey) | 3,578.30 mi (5,758.72 km) |
| Donostia to Clifton (Colorado) | 5,126.87 mi (8,250.89 km) |
| Donostia to Clifton (New Jersey) | 3,584.77 mi (5,769.13 km) |
| Donostia to Clinton (Iowa) | 4,262.90 mi (6,860.47 km) |
| Donostia to Clinton (Maryland) | 3,783.64 mi (6,089.17 km) |
| Donostia to Clinton (Mississippi) | 4,655.00 mi (7,491.49 km) |
| Donostia to Clinton (Utah) | 5,164.04 mi (8,310.73 km) |
| Donostia to Clive (Iowa) | 4,421.94 mi (7,116.43 km) |
| Donostia to Cloquet (Minnesota) | 4,168.29 mi (6,708.22 km) |
| Donostia to Cloverleaf (Texas) | 4,988.62 mi (8,028.41 km) |
