| Prospect Heights to Commerce (California) | 1,726.64 mi (2,778.75 km) |
| Prospect Heights to Commerce City (Colorado) | 894.25 mi (1,439.15 km) |
| Prospect Heights to Compton (California) | 1,733.80 mi (2,790.29 km) |
| Prospect Heights to Comstock Park (Michigan) | 131.56 mi (211.73 km) |
| Prospect Heights to Concord (California) | 1,812.72 mi (2,917.29 km) |
| Prospect Heights to Concord (Missouri) | 279.26 mi (449.43 km) |
| Prospect Heights to Concord (New Hampshire) | 833.82 mi (1,341.90 km) |
| Prospect Heights to Concord (North Carolina) | 607.19 mi (977.18 km) |
| Prospect Heights to Conneaut (Ohio) | 377.80 mi (608.02 km) |
| Prospect Heights to Connersville (Indiana) | 222.98 mi (358.85 km) |
| Prospect Heights to Conroe (Texas) | 915.51 mi (1,473.37 km) |
| Prospect Heights to Converse (Texas) | 1,044.93 mi (1,681.65 km) |
| Prospect Heights to Conway (Arkansas) | 543.86 mi (875.26 km) |
| Prospect Heights to Conway (Florida) | 1,010.21 mi (1,625.77 km) |
| Prospect Heights to Conway (South Carolina) | 747.53 mi (1,203.04 km) |
