| Imperial Beach to Oak Harbor (Washington) | 1,123.92 mi (1,808.78 km) |
| Imperial Beach to Oak Hills (Oregon) | 946.72 mi (1,523.60 km) |
| Imperial Beach to Oak Lawn (Illinois) | 1,725.90 mi (2,777.57 km) |
| Imperial Beach to Oak Park (California) | 146.67 mi (236.04 km) |
| Imperial Beach to Oak Park (Illinois) | 1,726.54 mi (2,778.60 km) |
| Imperial Beach to Oak Park (Michigan) | 1,965.74 mi (3,163.56 km) |
| Imperial Beach to Oak Ridge (Florida) | 2,133.73 mi (3,433.91 km) |
| Imperial Beach to Oak Ridge (New Jersey) | 2,404.18 mi (3,869.15 km) |
| Imperial Beach to Oak Ridge (Tennessee) | 1,880.01 mi (3,025.58 km) |
| Imperial Beach to Oakdale (California) | 415.92 mi (669.36 km) |
| Imperial Beach to Oakdale (Minnesota) | 1,548.99 mi (2,492.87 km) |
| Imperial Beach to Oakland (California) | 461.39 mi (742.54 km) |
| Imperial Beach to Oakland (New Jersey) | 2,417.54 mi (3,890.65 km) |
| Imperial Beach to Oakland Park (Florida) | 2,257.46 mi (3,633.02 km) |
| Imperial Beach to Oakleaf Plantation (Florida) | 2,078.71 mi (3,345.36 km) |
