| Havre de Grace to Oak Harbor (Washington) | 2,353.87 mi (3,788.19 km) |
| Havre de Grace to Oak Hills (Oregon) | 2,379.91 mi (3,830.10 km) |
| Havre de Grace to Oak Lawn (Illinois) | 627.80 mi (1,010.34 km) |
| Havre de Grace to Oak Park (California) | 2,364.31 mi (3,804.99 km) |
| Havre de Grace to Oak Park (Illinois) | 631.85 mi (1,016.86 km) |
| Havre de Grace to Oak Park (Michigan) | 419.82 mi (675.64 km) |
| Havre de Grace to Oak Ridge (Florida) | 822.86 mi (1,324.26 km) |
| Havre de Grace to Oak Ridge (New Jersey) | 133.35 mi (214.61 km) |
| Havre de Grace to Oak Ridge (Tennessee) | 510.54 mi (821.63 km) |
| Havre de Grace to Oakdale (California) | 2,391.74 mi (3,849.13 km) |
| Havre de Grace to Oakdale (Minnesota) | 937.60 mi (1,508.92 km) |
| Havre de Grace to Oakland (California) | 2,462.55 mi (3,963.08 km) |
| Havre de Grace to Oakland (New Jersey) | 142.32 mi (229.04 km) |
| Havre de Grace to Oakland Park (Florida) | 952.74 mi (1,533.29 km) |
| Havre de Grace to Oakleaf Plantation (Florida) | 724.21 mi (1,165.50 km) |
