| Imperial Beach to Oakley (California) | 454.91 mi (732.10 km) |
| Imperial Beach to Oakton (Virginia) | 2,257.18 mi (3,632.59 km) |
| Imperial Beach to Oakville (Missouri) | 1,554.84 mi (2,502.27 km) |
| Imperial Beach to Oatfield (Oregon) | 934.25 mi (1,503.53 km) |
| Imperial Beach to Ocala (Florida) | 2,077.56 mi (3,343.51 km) |
| Imperial Beach to Ocean Acres (New Jersey) | 2,416.96 mi (3,889.73 km) |
| Imperial Beach to Ocean City (New Jersey) | 2,401.05 mi (3,864.12 km) |
| Imperial Beach to Ocean Pines (Maryland) | 2,374.70 mi (3,821.71 km) |
| Imperial Beach to Ocean Pointe (Hawaii) | 2,619.23 mi (4,215.24 km) |
| Imperial Beach to Ocean Springs (Mississippi) | 1,671.04 mi (2,689.27 km) |
| Imperial Beach to Oceanside (California) | 46.61 mi (75.01 km) |
| Imperial Beach to Oceanside (New York) | 2,449.40 mi (3,941.92 km) |
| Imperial Beach to Ocoee (Florida) | 2,124.86 mi (3,419.64 km) |
| Imperial Beach to Oconomowoc (Wisconsin) | 1,711.82 mi (2,754.91 km) |
| Imperial Beach to Odenton (Maryland) | 2,289.52 mi (3,684.63 km) |
