| Greenock to Corinth (Mississippi) | 4,032.27 mi (6,489.31 km) |
| Greenock to Corinth (Texas) | 4,440.51 mi (7,146.31 km) |
| Greenock to Cornelius (North Carolina) | 3,719.05 mi (5,985.23 km) |
| Greenock to Cornelius (Oregon) | 4,566.62 mi (7,349.27 km) |
| Greenock to Corning (New York) | 3,245.96 mi (5,223.86 km) |
| Greenock to Corona (California) | 5,088.80 mi (8,189.63 km) |
| Greenock to Coronado (California) | 5,145.96 mi (8,281.62 km) |
| Greenock to Corpus Christi (Texas) | 4,748.26 mi (7,641.59 km) |
| Greenock to Corsicana (Texas) | 4,476.33 mi (7,203.96 km) |
| Greenock to Cortland (New York) | 3,191.81 mi (5,136.73 km) |
| Greenock to Corvallis (Oregon) | 4,627.89 mi (7,447.86 km) |
| Greenock to Coshocton (Ohio) | 3,515.26 mi (5,657.26 km) |
| Greenock to Costa Mesa (California) | 5,110.91 mi (8,225.22 km) |
| Greenock to Coto de Caza (California) | 5,104.93 mi (8,215.60 km) |
| Greenock to Cottage Grove (Minnesota) | 3,687.11 mi (5,933.83 km) |
