| Spanish Lake to Odenton (Maryland) | 725.97 mi (1,168.33 km) |
| Spanish Lake to Odessa (Texas) | 832.97 mi (1,340.53 km) |
| Spanish Lake to Ogden (Utah) | 1,160.76 mi (1,868.07 km) |
| Spanish Lake to Oildale (California) | 1,598.31 mi (2,572.23 km) |
| Spanish Lake to Ojus (Florida) | 1,061.32 mi (1,708.03 km) |
| Spanish Lake to Okemos (Michigan) | 406.32 mi (653.91 km) |
| Spanish Lake to Oklahoma City (Oklahoma) | 463.05 mi (745.21 km) |
| Spanish Lake to Okmulgee (Oklahoma) | 387.14 mi (623.04 km) |
| Spanish Lake to Olathe (Kansas) | 248.29 mi (399.59 km) |
| Spanish Lake to Old Jamestown (Missouri) | 5.44 mi (8.76 km) |
| Spanish Lake to Oldsmar (Florida) | 859.09 mi (1,382.58 km) |
| Spanish Lake to Olean (New York) | 659.08 mi (1,060.68 km) |
| Spanish Lake to Olive Branch (Mississippi) | 265.20 mi (426.79 km) |
| Spanish Lake to Olivehurst (California) | 1,676.54 mi (2,698.14 km) |
| Spanish Lake to Olney (Maryland) | 705.50 mi (1,135.39 km) |
