| Penafiel to Cicero (Illinois) | 3,951.49 mi (6,359.30 km) |
| Penafiel to Cimarron Hills (Colorado) | 4,811.90 mi (7,744.00 km) |
| Penafiel to Cincinnati (Ohio) | 3,890.13 mi (6,260.56 km) |
| Penafiel to Cinco Ranch (Texas) | 4,779.39 mi (7,691.69 km) |
| Penafiel to Circleville (Ohio) | 3,800.91 mi (6,116.97 km) |
| Penafiel to Citrus (California) | 5,580.30 mi (8,980.63 km) |
| Penafiel to Citrus Heights (California) | 5,492.38 mi (8,839.13 km) |
| Penafiel to Citrus Park (Florida) | 4,191.69 mi (6,745.87 km) |
| Penafiel to Claiborne (Louisiana) | 4,495.66 mi (7,235.06 km) |
| Penafiel to Claremont (California) | 5,572.68 mi (8,968.37 km) |
| Penafiel to Claremont (New Hampshire) | 3,194.46 mi (5,140.98 km) |
| Penafiel to Claremore (Oklahoma) | 4,509.37 mi (7,257.13 km) |
| Penafiel to Clarksburg (Maryland) | 3,542.59 mi (5,701.25 km) |
| Penafiel to Clarksburg (West Virginia) | 3,687.27 mi (5,934.09 km) |
| Penafiel to Clarksdale (Mississippi) | 4,353.92 mi (7,006.95 km) |
