| Wheat Ridge to Castelfidardo | 5,531.56 mi (8,902.19 km) |
| Wheat Ridge to Castelfiorentino | 5,435.08 mi (8,746.91 km) |
| Wheat Ridge to Castelfranco di Sopra | 5,454.69 mi (8,778.48 km) |
| Wheat Ridge to Castelfranco di Sotto | 5,422.54 mi (8,726.74 km) |
| Wheat Ridge to Castelfranco Emilia | 5,389.23 mi (8,673.13 km) |
| Wheat Ridge to Castelfranco Veneto | 5,366.83 mi (8,637.07 km) |
| Wheat Ridge to Castellabate | 5,742.49 mi (9,241.64 km) |
| Wheat Ridge to Castellammare del Golfo | 5,781.98 mi (9,305.20 km) |
| Wheat Ridge to Castellammare di Stabia | 5,704.53 mi (9,180.55 km) |
| Wheat Ridge to Castellamonte | 5,234.24 mi (8,423.70 km) |
| Wheat Ridge to Castellana Grotte | 5,788.09 mi (9,315.04 km) |
| Wheat Ridge to Castellaneta | 5,793.16 mi (9,323.19 km) |
| Wheat Ridge to Castellanza | 5,264.93 mi (8,473.09 km) |
| Wheat Ridge to Castellarano | 5,381.33 mi (8,660.41 km) |
| Wheat Ridge to Castelleone | 5,310.35 mi (8,546.18 km) |
