| Giffnock to Cookeville (Tennessee) | 3,878.71 mi (6,242.18 km) |
| Giffnock to Coolidge (Arizona) | 4,970.65 mi (7,999.49 km) |
| Giffnock to Coon Rapids (Minnesota) | 3,703.15 mi (5,959.64 km) |
| Giffnock to Cooper City (Florida) | 4,211.94 mi (6,778.47 km) |
| Giffnock to Coos Bay (Oregon) | 4,742.56 mi (7,632.41 km) |
| Giffnock to Copiague (New York) | 3,197.65 mi (5,146.13 km) |
| Giffnock to Coppell (Texas) | 4,468.08 mi (7,190.68 km) |
| Giffnock to Copperas Cove (Texas) | 4,601.80 mi (7,405.88 km) |
| Giffnock to Coral Gables (Florida) | 4,229.89 mi (6,807.35 km) |
| Giffnock to Coral Springs (Florida) | 4,198.81 mi (6,757.33 km) |
| Giffnock to Coral Terrace (Florida) | 4,228.88 mi (6,805.72 km) |
| Giffnock to Coralville (Iowa) | 3,817.52 mi (6,143.70 km) |
| Giffnock to Coram (New York) | 3,172.97 mi (5,106.40 km) |
| Giffnock to Corcoran (California) | 5,039.99 mi (8,111.09 km) |
| Giffnock to Cordele (Georgia) | 4,030.89 mi (6,487.09 km) |
