| Senec to Orangevale (California) | 5,917.71 mi (9,523.64 km) |
| Senec to Orchards (Washington) | 5,512.34 mi (8,871.26 km) |
| Senec to Orcutt (California) | 6,134.44 mi (9,872.42 km) |
| Senec to Oregon (Ohio) | 4,580.49 mi (7,371.59 km) |
| Senec to Oregon (Wisconsin) | 4,731.07 mi (7,613.93 km) |
| Senec to Oregon City (Oregon) | 5,535.24 mi (8,908.11 km) |
| Senec to Orem (Utah) | 5,575.02 mi (8,972.13 km) |
| Senec to Orinda (California) | 5,990.60 mi (9,640.93 km) |
| Senec to Orland Park (Illinois) | 4,743.43 mi (7,633.81 km) |
| Senec to Orlando (Florida) | 5,150.09 mi (8,288.27 km) |
| Senec to Ormond Beach (Florida) | 5,098.98 mi (8,206.02 km) |
| Senec to Oro Valley (Arizona) | 6,017.92 mi (9,684.91 km) |
| Senec to Oroville (California) | 5,875.45 mi (9,455.62 km) |
| Senec to Oshkosh (Wisconsin) | 4,647.57 mi (7,479.55 km) |
| Senec to Oskaloosa (Iowa) | 4,926.68 mi (7,928.73 km) |
