| Zollikon to Oakley (California) | 5,792.08 mi (9,321.45 km) |
| Zollikon to Oakton (Virginia) | 4,147.45 mi (6,674.68 km) |
| Zollikon to Oakville (Missouri) | 4,695.83 mi (7,557.21 km) |
| Zollikon to Oatfield (Oregon) | 5,378.44 mi (8,655.75 km) |
| Zollikon to Ocala (Florida) | 4,798.63 mi (7,722.65 km) |
| Zollikon to Ocean Acres (New Jersey) | 3,983.86 mi (6,411.40 km) |
| Zollikon to Ocean City (New Jersey) | 4,017.41 mi (6,465.40 km) |
| Zollikon to Ocean Pines (Maryland) | 4,078.12 mi (6,563.10 km) |
| Zollikon to Ocean Pointe (Hawaii) | 7,620.37 mi (12,263.80 km) |
| Zollikon to Ocean Springs (Mississippi) | 5,023.28 mi (8,084.20 km) |
| Zollikon to Oceanside (California) | 5,938.38 mi (9,556.90 km) |
| Zollikon to Oceanside (New York) | 3,919.74 mi (6,308.22 km) |
| Zollikon to Ocoee (Florida) | 4,800.12 mi (7,725.05 km) |
| Zollikon to Oconomowoc (Wisconsin) | 4,407.91 mi (7,093.85 km) |
| Zollikon to Odenton (Maryland) | 4,114.28 mi (6,621.30 km) |
