| Roman to Carson (California) | 6,451.76 mi (10,383.11 km) |
| Roman to Carson City (Nevada) | 6,144.28 mi (9,888.27 km) |
| Roman to Carteret (New Jersey) | 4,697.12 mi (7,559.28 km) |
| Roman to Cartersville (Georgia) | 5,417.10 mi (8,717.99 km) |
| Roman to Carthage (Missouri) | 5,587.16 mi (8,991.67 km) |
| Roman to Cary (Illinois) | 5,112.90 mi (8,228.42 km) |
| Roman to Cary (North Carolina) | 5,108.26 mi (8,220.96 km) |
| Roman to Casa de Oro-Mount Helix (California) | 6,490.33 mi (10,445.17 km) |
| Roman to Casa Grande (Arizona) | 6,352.21 mi (10,222.89 km) |
| Roman to Casas Adobes (Arizona) | 6,367.09 mi (10,246.85 km) |
| Roman to Cascades (Virginia) | 4,891.09 mi (7,871.45 km) |
| Roman to Casper (Wyoming) | 5,607.72 mi (9,024.75 km) |
| Roman to Casselberry (Florida) | 5,571.33 mi (8,966.20 km) |
| Roman to Castaic (California) | 6,419.08 mi (10,330.52 km) |
| Roman to Castle Pines (Colorado) | 5,770.56 mi (9,286.81 km) |
