| Gresham to Cordele (Georgia) | 2,257.27 mi (3,632.72 km) |
| Gresham to Corinth (Mississippi) | 1,914.92 mi (3,081.77 km) |
| Gresham to Corinth (Texas) | 1,592.06 mi (2,562.17 km) |
| Gresham to Cornelius (North Carolina) | 2,262.90 mi (3,641.78 km) |
| Gresham to Cornelius (Oregon) | 29.54 mi (47.55 km) |
| Gresham to Corning (New York) | 2,243.96 mi (3,611.31 km) |
| Gresham to Corona (California) | 844.62 mi (1,359.28 km) |
| Gresham to Coronado (California) | 930.54 mi (1,497.55 km) |
| Gresham to Corpus Christi (Texas) | 1,840.75 mi (2,962.40 km) |
| Gresham to Corsicana (Texas) | 1,666.36 mi (2,681.74 km) |
| Gresham to Cortland (New York) | 2,274.18 mi (3,659.94 km) |
| Gresham to Corvallis (Oregon) | 76.27 mi (122.75 km) |
| Gresham to Coshocton (Ohio) | 2,064.20 mi (3,322.02 km) |
| Gresham to Costa Mesa (California) | 852.17 mi (1,371.44 km) |
| Gresham to Coto de Caza (California) | 861.91 mi (1,387.12 km) |
