| Gloucester to Oak Harbor (Washington) | 4,677.80 mi (7,528.19 km) |
| Gloucester to Oak Hills (Oregon) | 4,839.78 mi (7,788.87 km) |
| Gloucester to Oak Lawn (Illinois) | 3,867.85 mi (6,224.71 km) |
| Gloucester to Oak Park (California) | 5,365.33 mi (8,634.66 km) |
| Gloucester to Oak Park (Illinois) | 3,861.26 mi (6,214.10 km) |
| Gloucester to Oak Park (Michigan) | 3,657.16 mi (5,885.63 km) |
| Gloucester to Oak Ridge (Florida) | 4,250.17 mi (6,839.98 km) |
| Gloucester to Oak Ridge (New Jersey) | 3,373.53 mi (5,429.18 km) |
| Gloucester to Oak Ridge (Tennessee) | 4,002.10 mi (6,440.76 km) |
| Gloucester to Oakdale (California) | 5,226.45 mi (8,411.16 km) |
| Gloucester to Oakdale (Minnesota) | 3,910.26 mi (6,292.95 km) |
| Gloucester to Oakland (California) | 5,266.34 mi (8,475.36 km) |
| Gloucester to Oakland (New Jersey) | 3,363.14 mi (5,412.44 km) |
| Gloucester to Oakland Park (Florida) | 4,312.37 mi (6,940.09 km) |
| Gloucester to Oakleaf Plantation (Florida) | 4,183.18 mi (6,732.18 km) |
