| Glastonbury to Cookeville (Tennessee) | 4,040.12 mi (6,501.95 km) |
| Glastonbury to Coolidge (Arizona) | 5,203.13 mi (8,373.63 km) |
| Glastonbury to Coon Rapids (Minnesota) | 3,923.54 mi (6,314.33 km) |
| Glastonbury to Cooper City (Florida) | 4,311.63 mi (6,938.90 km) |
| Glastonbury to Coos Bay (Oregon) | 5,026.63 mi (8,089.58 km) |
| Glastonbury to Copiague (New York) | 3,338.63 mi (5,373.01 km) |
| Glastonbury to Coppell (Texas) | 4,656.04 mi (7,493.17 km) |
| Glastonbury to Copperas Cove (Texas) | 4,786.73 mi (7,703.50 km) |
| Glastonbury to Coral Gables (Florida) | 4,328.13 mi (6,965.45 km) |
| Glastonbury to Coral Springs (Florida) | 4,299.30 mi (6,919.06 km) |
| Glastonbury to Coral Terrace (Florida) | 4,327.42 mi (6,964.32 km) |
| Glastonbury to Coralville (Iowa) | 4,020.15 mi (6,469.81 km) |
| Glastonbury to Coram (New York) | 3,313.74 mi (5,332.95 km) |
| Glastonbury to Corcoran (California) | 5,300.77 mi (8,530.76 km) |
| Glastonbury to Cordele (Georgia) | 4,168.71 mi (6,708.89 km) |
