| Portimao to Clermont (Florida) | 4,186.59 mi (6,737.66 km) |
| Portimao to Cleveland (Mississippi) | 4,478.76 mi (7,207.86 km) |
| Portimao to Cleveland (Ohio) | 3,802.62 mi (6,119.72 km) |
| Portimao to Cleveland (Tennessee) | 4,137.34 mi (6,658.40 km) |
| Portimao to Cleveland Heights (Ohio) | 3,796.11 mi (6,109.24 km) |
| Portimao to Cliffside Park (New Jersey) | 3,441.58 mi (5,538.69 km) |
| Portimao to Clifton (Colorado) | 5,119.97 mi (8,239.79 km) |
| Portimao to Clifton (New Jersey) | 3,449.10 mi (5,550.80 km) |
| Portimao to Clinton (Iowa) | 4,198.23 mi (6,756.39 km) |
| Portimao to Clinton (Maryland) | 3,635.80 mi (5,851.26 km) |
| Portimao to Clinton (Mississippi) | 4,506.38 mi (7,252.32 km) |
| Portimao to Clinton (Utah) | 5,190.47 mi (8,353.25 km) |
| Portimao to Clive (Iowa) | 4,369.72 mi (7,032.38 km) |
| Portimao to Cloquet (Minnesota) | 4,158.87 mi (6,693.06 km) |
| Portimao to Cloverleaf (Texas) | 4,842.74 mi (7,793.63 km) |
