| Glen Carbon to Town and Country (Missouri) | 28.18 mi (45.34 km) |
| Glen Carbon to Towson (Maryland) | 717.46 mi (1,154.64 km) |
| Glen Carbon to Tracy (California) | 1,700.81 mi (2,737.19 km) |
| Glen Carbon to Traverse City (Michigan) | 471.62 mi (759.00 km) |
| Glen Carbon to Travilah (Maryland) | 684.47 mi (1,101.55 km) |
| Glen Carbon to Trenton (Michigan) | 426.42 mi (686.26 km) |
| Glen Carbon to Trenton (New Jersey) | 816.71 mi (1,314.37 km) |
| Glen Carbon to Trenton (Ohio) | 300.03 mi (482.85 km) |
| Glen Carbon to Triangle (Virginia) | 682.86 mi (1,098.96 km) |
| Glen Carbon to Trinity (Florida) | 843.22 mi (1,357.04 km) |
| Glen Carbon to Trophy Club (Texas) | 566.08 mi (911.01 km) |
| Glen Carbon to Trotwood (Ohio) | 311.29 mi (500.98 km) |
| Glen Carbon to Troutdale (Oregon) | 1,712.25 mi (2,755.60 km) |
| Glen Carbon to Troy (Alabama) | 531.15 mi (854.81 km) |
| Glen Carbon to Troy (Illinois) | 5.04 mi (8.11 km) |
