| Selsey to Olympia Heights (Florida) | 4,417.13 mi (7,108.68 km) |
| Selsey to Omaha (Nebraska) | 4,294.98 mi (6,912.11 km) |
| Selsey to On Top of the World Designated Place (Florida) | 4,333.40 mi (6,973.93 km) |
| Selsey to Onalaska (Wisconsin) | 3,991.09 mi (6,423.04 km) |
| Selsey to Oneida (New York) | 3,420.23 mi (5,504.32 km) |
| Selsey to Oneonta (New York) | 3,421.64 mi (5,506.60 km) |
| Selsey to Ontario (California) | 5,434.28 mi (8,745.63 km) |
| Selsey to Ontario (Oregon) | 4,856.59 mi (7,815.93 km) |
| Selsey to Opa-locka (Florida) | 4,404.77 mi (7,088.79 km) |
| Selsey to Opelika (Alabama) | 4,289.97 mi (6,904.05 km) |
| Selsey to Opelousas (Louisiana) | 4,671.21 mi (7,517.59 km) |
| Selsey to Orange (California) | 5,454.70 mi (8,778.48 km) |
| Selsey to Orange (Texas) | 4,759.78 mi (7,660.12 km) |
| Selsey to Orange City (Florida) | 4,299.25 mi (6,918.98 km) |
| Selsey to Orangeburg (South Carolina) | 4,061.90 mi (6,537.00 km) |
