| Tracy to Odenton (Maryland) | 2,400.71 mi (3,863.56 km) |
| Tracy to Odessa (Texas) | 1,154.23 mi (1,857.56 km) |
| Tracy to Ogden (Utah) | 560.24 mi (901.62 km) |
| Tracy to Oildale (California) | 207.96 mi (334.68 km) |
| Tracy to Ojus (Florida) | 2,533.24 mi (4,076.85 km) |
| Tracy to Okemos (Michigan) | 1,968.03 mi (3,167.24 km) |
| Tracy to Oklahoma City (Oklahoma) | 1,333.38 mi (2,145.87 km) |
| Tracy to Okmulgee (Oklahoma) | 1,413.33 mi (2,274.53 km) |
| Tracy to Olathe (Kansas) | 1,441.07 mi (2,319.17 km) |
| Tracy to Old Jamestown (Missouri) | 1,683.93 mi (2,710.02 km) |
| Tracy to Oldsmar (Florida) | 2,328.98 mi (3,748.14 km) |
| Tracy to Olean (New York) | 2,275.72 mi (3,662.42 km) |
| Tracy to Olive Branch (Mississippi) | 1,760.90 mi (2,833.90 km) |
| Tracy to Olivehurst (California) | 93.63 mi (150.68 km) |
| Tracy to Olney (Maryland) | 2,379.74 mi (3,829.82 km) |
