| Glastonbury to Oakley (California) | 5,259.53 mi (8,464.40 km) |
| Glastonbury to Oakton (Virginia) | 3,577.63 mi (5,757.63 km) |
| Glastonbury to Oakville (Missouri) | 4,123.77 mi (6,636.57 km) |
| Glastonbury to Oatfield (Oregon) | 4,865.04 mi (7,829.53 km) |
| Glastonbury to Ocala (Florida) | 4,236.09 mi (6,817.33 km) |
| Glastonbury to Ocean Acres (New Jersey) | 3,415.03 mi (5,495.96 km) |
| Glastonbury to Ocean City (New Jersey) | 3,448.90 mi (5,550.46 km) |
| Glastonbury to Ocean Pines (Maryland) | 3,510.24 mi (5,649.18 km) |
| Glastonbury to Ocean Pointe (Hawaii) | 7,210.18 mi (11,603.67 km) |
| Glastonbury to Ocean Springs (Mississippi) | 4,453.31 mi (7,166.91 km) |
| Glastonbury to Oceanside (California) | 5,387.67 mi (8,670.61 km) |
| Glastonbury to Oceanside (New York) | 3,350.37 mi (5,391.90 km) |
| Glastonbury to Ocoee (Florida) | 4,239.29 mi (6,822.47 km) |
| Glastonbury to Oconomowoc (Wisconsin) | 3,837.54 mi (6,175.92 km) |
| Glastonbury to Odenton (Maryland) | 3,544.65 mi (5,704.56 km) |
