| Seymour to Odenton (Maryland) | 493.66 mi (794.48 km) |
| Seymour to Odessa (Texas) | 1,045.06 mi (1,681.86 km) |
| Seymour to Ogden (Utah) | 1,382.18 mi (2,224.41 km) |
| Seymour to Oildale (California) | 1,830.06 mi (2,945.20 km) |
| Seymour to Ojus (Florida) | 957.21 mi (1,540.48 km) |
| Seymour to Okemos (Michigan) | 270.89 mi (435.96 km) |
| Seymour to Oklahoma City (Oklahoma) | 682.65 mi (1,098.63 km) |
| Seymour to Okmulgee (Oklahoma) | 601.50 mi (968.03 km) |
| Seymour to Olathe (Kansas) | 479.84 mi (772.23 km) |
| Seymour to Old Jamestown (Missouri) | 236.37 mi (380.40 km) |
| Seymour to Oldsmar (Florida) | 775.29 mi (1,247.71 km) |
| Seymour to Olean (New York) | 447.43 mi (720.07 km) |
| Seymour to Olive Branch (Mississippi) | 351.45 mi (565.60 km) |
| Seymour to Olivehurst (California) | 1,902.22 mi (3,061.32 km) |
| Seymour to Olney (Maryland) | 473.27 mi (761.66 km) |
