| Mercer Island to Cordele (Georgia) | 2,278.44 mi (3,666.80 km) |
| Mercer Island to Corinth (Mississippi) | 1,935.77 mi (3,115.33 km) |
| Mercer Island to Corinth (Texas) | 1,645.33 mi (2,647.90 km) |
| Mercer Island to Cornelius (North Carolina) | 2,264.53 mi (3,644.40 km) |
| Mercer Island to Cornelius (Oregon) | 146.71 mi (236.11 km) |
| Mercer Island to Corning (New York) | 2,211.96 mi (3,559.81 km) |
| Mercer Island to Corona (California) | 977.45 mi (1,573.05 km) |
| Mercer Island to Coronado (California) | 1,063.27 mi (1,711.17 km) |
| Mercer Island to Corpus Christi (Texas) | 1,914.55 mi (3,081.16 km) |
| Mercer Island to Corsicana (Texas) | 1,722.07 mi (2,771.40 km) |
| Mercer Island to Cortland (New York) | 2,239.14 mi (3,603.54 km) |
| Mercer Island to Corvallis (Oregon) | 213.00 mi (342.80 km) |
| Mercer Island to Coshocton (Ohio) | 2,047.56 mi (3,295.23 km) |
| Mercer Island to Costa Mesa (California) | 986.29 mi (1,587.28 km) |
| Mercer Island to Coto de Caza (California) | 995.08 mi (1,601.42 km) |
