| Potomac to Cedar Park (Texas) | 1,305.68 mi (2,101.30 km) |
| Potomac to Cedar Rapids (Iowa) | 786.86 mi (1,266.32 km) |
| Potomac to Cedarburg (Wisconsin) | 634.10 mi (1,020.49 km) |
| Potomac to Celebration (Florida) | 780.57 mi (1,256.21 km) |
| Potomac to Celina (Ohio) | 405.31 mi (652.28 km) |
| Potomac to Celina (Texas) | 1,159.16 mi (1,865.49 km) |
| Potomac to Centennial (Colorado) | 1,474.20 mi (2,372.50 km) |
| Potomac to Center Point (Alabama) | 644.96 mi (1,037.96 km) |
| Potomac to Centereach (New York) | 252.67 mi (406.63 km) |
| Potomac to Centerton (Arkansas) | 951.51 mi (1,531.31 km) |
| Potomac to Centerville (Ohio) | 373.87 mi (601.68 km) |
| Potomac to Centerville (Utah) | 1,829.60 mi (2,944.46 km) |
| Potomac to Central (Louisiana) | 977.00 mi (1,572.34 km) |
| Potomac to Central Falls (Rhode Island) | 363.88 mi (585.61 km) |
| Potomac to Central Islip (New York) | 244.70 mi (393.81 km) |
