| Trecate to Orangevale (California) | 5,847.40 mi (9,410.49 km) |
| Trecate to Orchards (Washington) | 5,475.80 mi (8,812.44 km) |
| Trecate to Orcutt (California) | 6,045.12 mi (9,728.68 km) |
| Trecate to Oregon (Ohio) | 4,354.26 mi (7,007.51 km) |
| Trecate to Oregon (Wisconsin) | 4,534.72 mi (7,297.93 km) |
| Trecate to Oregon City (Oregon) | 5,497.65 mi (8,847.61 km) |
| Trecate to Orem (Utah) | 5,462.92 mi (8,791.73 km) |
| Trecate to Orinda (California) | 5,922.35 mi (9,531.09 km) |
| Trecate to Orland Park (Illinois) | 4,533.80 mi (7,296.45 km) |
| Trecate to Orlando (Florida) | 4,849.50 mi (7,804.52 km) |
| Trecate to Ormond Beach (Florida) | 4,801.16 mi (7,726.72 km) |
| Trecate to Oro Valley (Arizona) | 5,868.07 mi (9,443.74 km) |
| Trecate to Oroville (California) | 5,810.07 mi (9,350.40 km) |
| Trecate to Oshkosh (Wisconsin) | 4,454.26 mi (7,168.43 km) |
| Trecate to Oskaloosa (Iowa) | 4,734.36 mi (7,619.21 km) |
