| Swanage to Olympia Heights (Florida) | 4,367.92 mi (7,029.48 km) |
| Swanage to Omaha (Nebraska) | 4,256.09 mi (6,849.51 km) |
| Swanage to On Top of the World Designated Place (Florida) | 4,285.49 mi (6,896.84 km) |
| Swanage to Onalaska (Wisconsin) | 3,951.85 mi (6,359.89 km) |
| Swanage to Oneida (New York) | 3,375.86 mi (5,432.92 km) |
| Swanage to Oneonta (New York) | 3,376.81 mi (5,434.45 km) |
| Swanage to Ontario (California) | 5,401.12 mi (8,692.26 km) |
| Swanage to Ontario (Oregon) | 4,827.60 mi (7,769.28 km) |
| Swanage to Opa-locka (Florida) | 4,355.58 mi (7,009.63 km) |
| Swanage to Opelika (Alabama) | 4,244.00 mi (6,830.06 km) |
| Swanage to Opelousas (Louisiana) | 4,626.51 mi (7,445.64 km) |
| Swanage to Orange (California) | 5,421.54 mi (8,725.12 km) |
| Swanage to Orange (Texas) | 4,715.46 mi (7,588.81 km) |
| Swanage to Orange City (Florida) | 4,251.06 mi (6,841.42 km) |
| Swanage to Orangeburg (South Carolina) | 4,014.99 mi (6,461.50 km) |
