| Harper Woods to Cortona | 4,517.63 mi (7,270.43 km) |
| Harper Woods to Cosenza | 4,860.58 mi (7,822.35 km) |
| Harper Woods to Cossato | 4,272.56 mi (6,876.02 km) |
| Harper Woods to Costa Volpino | 4,340.13 mi (6,984.76 km) |
| Harper Woods to Creazzo | 4,406.83 mi (7,092.11 km) |
| Harper Woods to Crema | 4,341.41 mi (6,986.83 km) |
| Harper Woods to Cremona | 4,364.56 mi (7,024.08 km) |
| Harper Woods to Crevalcore | 4,425.86 mi (7,122.73 km) |
| Harper Woods to Crispiano | 4,843.87 mi (7,795.45 km) |
| Harper Woods to Crosia | 4,870.19 mi (7,837.81 km) |
| Harper Woods to Crotone | 4,905.90 mi (7,895.28 km) |
| Harper Woods to Cuneo | 4,292.24 mi (6,907.70 km) |
| Harper Woods to Cuorgne | 4,258.26 mi (6,853.00 km) |
| Harper Woods to Cusano Milanino | 4,314.24 mi (6,943.09 km) |
| Harper Woods to Cutro | 4,902.60 mi (7,889.97 km) |
