| Royston to Clarkston (Georgia) | 4,190.05 mi (6,743.24 km) |
| Royston to Clarksville (Indiana) | 4,031.61 mi (6,488.25 km) |
| Royston to Clarksville (Tennessee) | 4,178.07 mi (6,723.96 km) |
| Royston to Clawson (Michigan) | 3,733.45 mi (6,008.41 km) |
| Royston to Clay (Alabama) | 4,290.85 mi (6,905.46 km) |
| Royston to Clayton (California) | 5,306.03 mi (8,539.24 km) |
| Royston to Clayton (Missouri) | 4,191.99 mi (6,746.36 km) |
| Royston to Clayton (North Carolina) | 3,865.85 mi (6,221.49 km) |
| Royston to Clayton (Ohio) | 3,902.17 mi (6,279.94 km) |
| Royston to Clearfield (Utah) | 4,825.02 mi (7,765.12 km) |
| Royston to Clearlake (California) | 5,266.91 mi (8,476.28 km) |
| Royston to Clearwater (Florida) | 4,421.19 mi (7,115.22 km) |
| Royston to Cleburne (Texas) | 4,781.12 mi (7,694.46 km) |
| Royston to Clemmons (North Carolina) | 3,926.84 mi (6,319.64 km) |
| Royston to Clemson (South Carolina) | 4,089.81 mi (6,581.91 km) |
