| Giffnock to Caguas (Puerto Rico) | 4,092.90 mi (6,586.89 km) |
| Giffnock to Cahokia (Illinois) | 3,926.36 mi (6,318.86 km) |
| Giffnock to Calabasas (California) | 5,127.07 mi (8,251.23 km) |
| Giffnock to Caldwell (Idaho) | 4,519.34 mi (7,273.18 km) |
| Giffnock to Caledonia (Wisconsin) | 3,630.85 mi (5,843.28 km) |
| Giffnock to Calera (Alabama) | 4,082.02 mi (6,569.37 km) |
| Giffnock to Calexico (California) | 5,113.01 mi (8,228.59 km) |
| Giffnock to Calhoun (Georgia) | 3,942.80 mi (6,345.32 km) |
| Giffnock to California (Maryland) | 3,430.59 mi (5,521.00 km) |
| Giffnock to California City (California) | 5,043.28 mi (8,116.38 km) |
| Giffnock to Callaway (Florida) | 4,195.30 mi (6,751.68 km) |
| Giffnock to Calumet City (Illinois) | 3,677.65 mi (5,918.60 km) |
| Giffnock to Calverton (Maryland) | 3,410.53 mi (5,488.72 km) |
| Giffnock to Camano (Washington) | 4,416.78 mi (7,108.12 km) |
| Giffnock to Camarillo (California) | 5,133.09 mi (8,260.91 km) |
