| Gloucester to Odessa (Texas) | 4,914.49 mi (7,909.10 km) |
| Gloucester to Ogden (Utah) | 4,753.55 mi (7,650.10 km) |
| Gloucester to Oildale (California) | 5,302.92 mi (8,534.22 km) |
| Gloucester to Ojus (Florida) | 4,323.92 mi (6,958.68 km) |
| Gloucester to Okemos (Michigan) | 3,694.17 mi (5,945.20 km) |
| Gloucester to Oklahoma City (Oklahoma) | 4,545.12 mi (7,314.67 km) |
| Gloucester to Okmulgee (Oklahoma) | 4,480.32 mi (7,210.38 km) |
| Gloucester to Olathe (Kansas) | 4,271.79 mi (6,874.78 km) |
| Gloucester to Old Jamestown (Missouri) | 4,100.99 mi (6,599.91 km) |
| Gloucester to Oldsmar (Florida) | 4,323.79 mi (6,958.47 km) |
| Gloucester to Olean (New York) | 3,486.74 mi (5,611.36 km) |
| Gloucester to Olive Branch (Mississippi) | 4,272.98 mi (6,876.70 km) |
| Gloucester to Olivehurst (California) | 5,172.41 mi (8,324.19 km) |
| Gloucester to Olney (Maryland) | 3,561.41 mi (5,731.53 km) |
| Gloucester to Olympia (Washington) | 4,755.86 mi (7,653.82 km) |
