| Forest Grove to Carrollwood (Florida) | 2,513.67 mi (4,045.35 km) |
| Forest Grove to Carson (California) | 847.30 mi (1,363.60 km) |
| Forest Grove to Carson City (Nevada) | 472.52 mi (760.45 km) |
| Forest Grove to Carteret (New Jersey) | 2,452.81 mi (3,947.41 km) |
| Forest Grove to Cartersville (Georgia) | 2,154.00 mi (3,466.52 km) |
| Forest Grove to Carthage (Missouri) | 1,590.96 mi (2,560.40 km) |
| Forest Grove to Cary (Illinois) | 1,737.57 mi (2,796.35 km) |
| Forest Grove to Cary (North Carolina) | 2,384.21 mi (3,837.02 km) |
| Forest Grove to Casa de Oro-Mount Helix (California) | 940.32 mi (1,513.31 km) |
| Forest Grove to Casa Grande (Arizona) | 1,060.19 mi (1,706.22 km) |
| Forest Grove to Casas Adobes (Arizona) | 1,116.33 mi (1,796.56 km) |
| Forest Grove to Cascades (Virginia) | 2,346.84 mi (3,776.88 km) |
| Forest Grove to Casper (Wyoming) | 850.55 mi (1,368.82 km) |
| Forest Grove to Casselberry (Florida) | 2,543.35 mi (4,093.13 km) |
| Forest Grove to Castaic (California) | 798.58 mi (1,285.19 km) |
