| Seymour to Oerlinghausen | 4,339.28 mi (6,983.39 km) |
| Seymour to Oestrich-Winkel | 4,381.14 mi (7,050.76 km) |
| Seymour to Offenburg | 4,431.69 mi (7,132.11 km) |
| Seymour to Oftersheim | 4,425.57 mi (7,122.26 km) |
| Seymour to Ohrdruf | 4,455.84 mi (7,170.98 km) |
| Seymour to Ohringen | 4,467.05 mi (7,189.02 km) |
| Seymour to Olbernhau | 4,558.18 mi (7,335.69 km) |
| Seymour to Olching | 4,573.86 mi (7,360.91 km) |
| Seymour to Oldenburg | 4,283.27 mi (6,893.26 km) |
| Seymour to Oldenburg in Holstein | 4,339.72 mi (6,984.11 km) |
| Seymour to Olfen | 4,299.74 mi (6,919.76 km) |
| Seymour to Olpe | 4,340.14 mi (6,984.78 km) |
| Seymour to Olsberg | 4,353.37 mi (7,006.07 km) |
| Seymour to Oranienburg | 4,477.46 mi (7,205.77 km) |
| Seymour to Ortenberg | 4,409.24 mi (7,095.99 km) |
