| Zachary to Oakleaf Plantation (Florida) | 556.79 mi (896.07 km) |
| Zachary to Oakley (California) | 1,805.02 mi (2,904.91 km) |
| Zachary to Oakton (Virginia) | 968.60 mi (1,558.82 km) |
| Zachary to Oakville (Missouri) | 539.92 mi (868.92 km) |
| Zachary to Oatfield (Oregon) | 1,972.17 mi (3,173.90 km) |
| Zachary to Ocala (Florida) | 549.21 mi (883.87 km) |
| Zachary to Ocean Acres (New Jersey) | 1,137.99 mi (1,831.43 km) |
| Zachary to Ocean City (New Jersey) | 1,107.53 mi (1,782.39 km) |
| Zachary to Ocean Pines (Maryland) | 1,053.97 mi (1,696.20 km) |
| Zachary to Ocean Pointe (Hawaii) | 4,144.60 mi (6,670.09 km) |
| Zachary to Ocean Springs (Mississippi) | 142.57 mi (229.45 km) |
| Zachary to Oceanside (California) | 1,539.02 mi (2,476.81 km) |
| Zachary to Oceanside (New York) | 1,197.48 mi (1,927.16 km) |
| Zachary to Ocoee (Florida) | 595.86 mi (958.95 km) |
| Zachary to Oconomowoc (Wisconsin) | 871.63 mi (1,402.75 km) |
