| Irun to Carson (California) | 5,770.47 mi (9,286.68 km) |
| Irun to Carson City (Nevada) | 5,546.66 mi (8,926.49 km) |
| Irun to Carteret (New Jersey) | 3,605.50 mi (5,802.49 km) |
| Irun to Cartersville (Georgia) | 4,332.28 mi (6,972.14 km) |
| Irun to Carthage (Missouri) | 4,637.41 mi (7,463.19 km) |
| Irun to Cary (Illinois) | 4,171.28 mi (6,713.03 km) |
| Irun to Cary (North Carolina) | 3,989.73 mi (6,420.85 km) |
| Irun to Casa de Oro-Mount Helix (California) | 5,777.30 mi (9,297.66 km) |
| Irun to Casa Grande (Arizona) | 5,565.14 mi (8,956.23 km) |
| Irun to Casas Adobes (Arizona) | 5,562.84 mi (8,952.53 km) |
| Irun to Cascades (Virginia) | 3,803.77 mi (6,121.58 km) |
| Irun to Casper (Wyoming) | 4,875.08 mi (7,845.68 km) |
| Irun to Casselberry (Florida) | 4,392.18 mi (7,068.53 km) |
| Irun to Castaic (California) | 5,750.86 mi (9,255.12 km) |
| Irun to Castle Pines (Colorado) | 4,974.38 mi (8,005.50 km) |
