| Gourock to Corinth (Mississippi) | 4,030.26 mi (6,486.08 km) |
| Gourock to Corinth (Texas) | 4,438.53 mi (7,143.13 km) |
| Gourock to Cornelius (North Carolina) | 3,717.02 mi (5,981.96 km) |
| Gourock to Cornelius (Oregon) | 4,565.06 mi (7,346.76 km) |
| Gourock to Corning (New York) | 3,243.93 mi (5,220.61 km) |
| Gourock to Corona (California) | 5,087.03 mi (8,186.78 km) |
| Gourock to Coronado (California) | 5,144.17 mi (8,278.74 km) |
| Gourock to Corpus Christi (Texas) | 4,746.26 mi (7,638.37 km) |
| Gourock to Corsicana (Texas) | 4,474.35 mi (7,200.77 km) |
| Gourock to Cortland (New York) | 3,189.79 mi (5,133.47 km) |
| Gourock to Corvallis (Oregon) | 4,626.32 mi (7,445.34 km) |
| Gourock to Coshocton (Ohio) | 3,513.24 mi (5,654.02 km) |
| Gourock to Costa Mesa (California) | 5,109.14 mi (8,222.37 km) |
| Gourock to Coto de Caza (California) | 5,103.16 mi (8,212.74 km) |
| Gourock to Cottage Grove (Minnesota) | 3,685.20 mi (5,930.76 km) |
