| Glastonbury to Orangevale (California) | 5,205.40 mi (8,377.28 km) |
| Glastonbury to Orchards (Washington) | 4,847.68 mi (7,801.59 km) |
| Glastonbury to Orcutt (California) | 5,397.34 mi (8,686.18 km) |
| Glastonbury to Oregon (Ohio) | 3,704.57 mi (5,961.93 km) |
| Glastonbury to Oregon (Wisconsin) | 3,879.59 mi (6,243.60 km) |
| Glastonbury to Oregon City (Oregon) | 4,868.99 mi (7,835.88 km) |
| Glastonbury to Orem (Utah) | 4,811.16 mi (7,742.82 km) |
| Glastonbury to Orinda (California) | 5,280.79 mi (8,498.61 km) |
| Glastonbury to Orland Park (Illinois) | 3,880.65 mi (6,245.30 km) |
| Glastonbury to Orlando (Florida) | 4,235.98 mi (6,817.15 km) |
| Glastonbury to Ormond Beach (Florida) | 4,185.62 mi (6,736.10 km) |
| Glastonbury to Oro Valley (Arizona) | 5,211.61 mi (8,387.28 km) |
| Glastonbury to Oroville (California) | 5,169.76 mi (8,319.92 km) |
| Glastonbury to Oshkosh (Wisconsin) | 3,798.74 mi (6,113.49 km) |
| Glastonbury to Oskaloosa (Iowa) | 4,078.91 mi (6,564.36 km) |
