| Zollikon to Orangevale (California) | 5,737.69 mi (9,233.92 km) |
| Zollikon to Orchards (Washington) | 5,360.54 mi (8,626.96 km) |
| Zollikon to Orcutt (California) | 5,938.84 mi (9,557.64 km) |
| Zollikon to Oregon (Ohio) | 4,276.92 mi (6,883.04 km) |
| Zollikon to Oregon (Wisconsin) | 4,449.66 mi (7,161.04 km) |
| Zollikon to Oregon City (Oregon) | 5,382.56 mi (8,662.40 km) |
| Zollikon to Orem (Utah) | 5,360.30 mi (8,626.56 km) |
| Zollikon to Orinda (California) | 5,812.36 mi (9,354.09 km) |
| Zollikon to Orland Park (Illinois) | 4,452.17 mi (7,165.08 km) |
| Zollikon to Orlando (Florida) | 4,796.38 mi (7,719.02 km) |
| Zollikon to Ormond Beach (Florida) | 4,746.99 mi (7,639.54 km) |
| Zollikon to Oro Valley (Arizona) | 5,773.54 mi (9,291.62 km) |
| Zollikon to Oroville (California) | 5,699.51 mi (9,172.48 km) |
| Zollikon to Oshkosh (Wisconsin) | 4,368.34 mi (7,030.17 km) |
| Zollikon to Oskaloosa (Iowa) | 4,648.52 mi (7,481.07 km) |
