| Slough to Corinth (Mississippi) | 4,295.71 mi (6,913.27 km) |
| Slough to Corinth (Texas) | 4,721.76 mi (7,598.94 km) |
| Slough to Cornelius (North Carolina) | 3,961.72 mi (6,375.77 km) |
| Slough to Cornelius (Oregon) | 4,910.67 mi (7,902.96 km) |
| Slough to Corning (New York) | 3,503.98 mi (5,639.11 km) |
| Slough to Corona (California) | 5,414.56 mi (8,713.89 km) |
| Slough to Coronado (California) | 5,469.45 mi (8,802.24 km) |
| Slough to Corpus Christi (Texas) | 5,016.28 mi (8,072.93 km) |
| Slough to Corsicana (Texas) | 4,753.25 mi (7,649.62 km) |
| Slough to Cortland (New York) | 3,449.40 mi (5,551.28 km) |
| Slough to Corvallis (Oregon) | 4,971.43 mi (8,000.74 km) |
| Slough to Coshocton (Ohio) | 3,778.64 mi (6,081.14 km) |
| Slough to Costa Mesa (California) | 5,436.98 mi (8,749.98 km) |
| Slough to Coto de Caza (California) | 5,430.38 mi (8,739.35 km) |
| Slough to Cottage Grove (Minnesota) | 3,989.97 mi (6,421.23 km) |
