| Giffnock to Carson (California) | 5,132.01 mi (8,259.18 km) |
| Giffnock to Carson City (Nevada) | 4,866.42 mi (7,831.74 km) |
| Giffnock to Carteret (New Jersey) | 3,233.54 mi (5,203.88 km) |
| Giffnock to Cartersville (Georgia) | 3,954.57 mi (6,364.26 km) |
| Giffnock to Carthage (Missouri) | 4,148.83 mi (6,676.90 km) |
| Giffnock to Cary (Illinois) | 3,673.03 mi (5,911.18 km) |
| Giffnock to Cary (North Carolina) | 3,644.76 mi (5,865.68 km) |
| Giffnock to Casa de Oro-Mount Helix (California) | 5,154.82 mi (8,295.88 km) |
| Giffnock to Casa Grande (Arizona) | 4,980.08 mi (8,014.66 km) |
| Giffnock to Casas Adobes (Arizona) | 4,987.61 mi (8,026.79 km) |
| Giffnock to Cascades (Virginia) | 3,427.71 mi (5,516.37 km) |
| Giffnock to Casper (Wyoming) | 4,251.89 mi (6,842.75 km) |
| Giffnock to Casselberry (Florida) | 4,111.52 mi (6,616.85 km) |
| Giffnock to Castaic (California) | 5,105.80 mi (8,217.00 km) |
| Giffnock to Castle Pines (Colorado) | 4,388.01 mi (7,061.82 km) |
