| Potomac Park to Castelfidardo | 6,225.63 mi (10,019.19 km) |
| Potomac Park to Castelfiorentino | 6,138.97 mi (9,879.72 km) |
| Potomac Park to Castelfranco di Sopra | 6,156.13 mi (9,907.33 km) |
| Potomac Park to Castelfranco di Sotto | 6,126.80 mi (9,860.13 km) |
| Potomac Park to Castelfranco Emilia | 6,087.89 mi (9,797.52 km) |
| Potomac Park to Castelfranco Veneto | 6,056.59 mi (9,747.14 km) |
| Potomac Park to Castellabate | 6,445.60 mi (10,373.19 km) |
| Potomac Park to Castellammare del Golfo | 6,503.76 mi (10,466.79 km) |
| Potomac Park to Castellammare di Stabia | 6,407.75 mi (10,312.28 km) |
| Potomac Park to Castellamonte | 5,941.69 mi (9,562.23 km) |
| Potomac Park to Castellana Grotte | 6,478.60 mi (10,426.30 km) |
| Potomac Park to Castellaneta | 6,485.89 mi (10,438.02 km) |
| Potomac Park to Castellanza | 5,966.79 mi (9,602.63 km) |
| Potomac Park to Castellarano | 6,081.21 mi (9,786.75 km) |
| Potomac Park to Castelleone | 6,010.56 mi (9,673.06 km) |
