| Northampton to Orangevale (California) | 5,207.01 mi (8,379.87 km) |
| Northampton to Orchards (Washington) | 4,839.94 mi (7,789.13 km) |
| Northampton to Orcutt (California) | 5,404.09 mi (8,697.05 km) |
| Northampton to Oregon (Ohio) | 3,745.66 mi (6,028.06 km) |
| Northampton to Oregon (Wisconsin) | 3,912.35 mi (6,296.32 km) |
| Northampton to Oregon City (Oregon) | 4,861.57 mi (7,823.94 km) |
| Northampton to Orem (Utah) | 4,822.59 mi (7,761.21 km) |
| Northampton to Orinda (California) | 5,282.05 mi (8,500.64 km) |
| Northampton to Orland Park (Illinois) | 3,917.13 mi (6,304.01 km) |
| Northampton to Orlando (Florida) | 4,298.02 mi (6,916.99 km) |
| Northampton to Ormond Beach (Florida) | 4,246.91 mi (6,834.75 km) |
| Northampton to Oro Valley (Arizona) | 5,233.35 mi (8,422.26 km) |
| Northampton to Oroville (California) | 5,170.05 mi (8,320.39 km) |
| Northampton to Oshkosh (Wisconsin) | 3,830.58 mi (6,164.73 km) |
| Northampton to Oskaloosa (Iowa) | 4,110.72 mi (6,615.56 km) |
