| Hamm to Orangevale (California) | 5,479.26 mi (8,818.01 km) |
| Hamm to Orchards (Washington) | 5,090.71 mi (8,192.71 km) |
| Hamm to Orcutt (California) | 5,687.50 mi (9,153.15 km) |
| Hamm to Oregon (Ohio) | 4,093.50 mi (6,587.85 km) |
| Hamm to Oregon (Wisconsin) | 4,248.16 mi (6,836.76 km) |
| Hamm to Oregon City (Oregon) | 5,113.07 mi (8,228.69 km) |
| Hamm to Orem (Utah) | 5,117.67 mi (8,236.10 km) |
| Hamm to Orinda (California) | 5,553.26 mi (8,937.11 km) |
| Hamm to Orland Park (Illinois) | 4,258.42 mi (6,853.26 km) |
| Hamm to Orlando (Florida) | 4,666.07 mi (7,509.31 km) |
| Hamm to Ormond Beach (Florida) | 4,614.50 mi (7,426.32 km) |
| Hamm to Oro Valley (Arizona) | 5,547.89 mi (8,928.46 km) |
| Hamm to Oroville (California) | 5,439.33 mi (8,753.76 km) |
| Hamm to Oshkosh (Wisconsin) | 4,165.14 mi (6,703.14 km) |
| Hamm to Oskaloosa (Iowa) | 4,444.70 mi (7,153.05 km) |
