| Northampton to Oakley (California) | 5,261.29 mi (8,467.23 km) |
| Northampton to Oakton (Virginia) | 3,629.65 mi (5,841.36 km) |
| Northampton to Oakville (Missouri) | 4,162.37 mi (6,698.68 km) |
| Northampton to Oatfield (Oregon) | 4,857.54 mi (7,817.46 km) |
| Northampton to Ocala (Florida) | 4,296.37 mi (6,914.34 km) |
| Northampton to Ocean Acres (New Jersey) | 3,468.84 mi (5,582.56 km) |
| Northampton to Ocean City (New Jersey) | 3,503.15 mi (5,637.78 km) |
| Northampton to Ocean Pines (Maryland) | 3,565.34 mi (5,737.86 km) |
| Northampton to Ocean Pointe (Hawaii) | 7,171.46 mi (11,541.35 km) |
| Northampton to Ocean Springs (Mississippi) | 4,504.52 mi (7,249.33 km) |
| Northampton to Oceanside (California) | 5,400.28 mi (8,690.91 km) |
| Northampton to Oceanside (New York) | 3,403.35 mi (5,477.17 km) |
| Northampton to Ocoee (Florida) | 4,300.99 mi (6,921.77 km) |
| Northampton to Oconomowoc (Wisconsin) | 3,870.96 mi (6,229.70 km) |
| Northampton to Odenton (Maryland) | 3,597.03 mi (5,788.86 km) |
