| Potomac Park to Celano | 6,302.06 mi (10,142.18 km) |
| Potomac Park to Cento | 6,087.58 mi (9,797.02 km) |
| Potomac Park to Cepagatti | 6,302.14 mi (10,142.32 km) |
| Potomac Park to Ceprano | 6,330.40 mi (10,187.80 km) |
| Potomac Park to Cercola | 6,394.14 mi (10,290.38 km) |
| Potomac Park to Cerea | 6,060.33 mi (9,753.17 km) |
| Potomac Park to Cerese | 6,054.18 mi (9,743.27 km) |
| Potomac Park to Cerignola | 6,419.10 mi (10,330.55 km) |
| Potomac Park to Cermenate | 5,968.09 mi (9,604.72 km) |
| Potomac Park to Cernusco sul Naviglio | 5,985.56 mi (9,632.83 km) |
| Potomac Park to Cerreto Guidi | 6,127.38 mi (9,861.07 km) |
| Potomac Park to Cerro Maggiore | 5,969.23 mi (9,606.55 km) |
| Potomac Park to Certaldo | 6,144.11 mi (9,888.00 km) |
| Potomac Park to Cerveteri | 6,261.32 mi (10,076.62 km) |
| Potomac Park to Cervia | 6,146.02 mi (9,891.07 km) |
