| Rancho San Diego to Oak Grove (South Carolina) | 2,055.39 mi (3,307.83 km) |
| Rancho San Diego to Oak Harbor (Washington) | 1,113.64 mi (1,792.23 km) |
| Rancho San Diego to Oak Hills (Oregon) | 937.48 mi (1,508.72 km) |
| Rancho San Diego to Oak Lawn (Illinois) | 1,709.27 mi (2,750.80 km) |
| Rancho San Diego to Oak Park (California) | 144.89 mi (233.18 km) |
| Rancho San Diego to Oak Park (Illinois) | 1,709.86 mi (2,751.76 km) |
| Rancho San Diego to Oak Park (Michigan) | 1,949.08 mi (3,136.74 km) |
| Rancho San Diego to Oak Ridge (Florida) | 2,121.80 mi (3,414.71 km) |
| Rancho San Diego to Oak Ridge (New Jersey) | 2,387.92 mi (3,842.99 km) |
| Rancho San Diego to Oak Ridge (Tennessee) | 1,865.21 mi (3,001.77 km) |
| Rancho San Diego to Oakdale (California) | 410.27 mi (660.26 km) |
| Rancho San Diego to Oakdale (Minnesota) | 1,531.56 mi (2,464.80 km) |
| Rancho San Diego to Oakland (California) | 458.03 mi (737.13 km) |
| Rancho San Diego to Oakland (New Jersey) | 2,401.28 mi (3,864.49 km) |
| Rancho San Diego to Oakland Park (Florida) | 2,246.33 mi (3,615.11 km) |
