| Hamm to Odessa (Texas) | 5,287.79 mi (8,509.87 km) |
| Hamm to Ogden (Utah) | 5,072.40 mi (8,163.24 km) |
| Hamm to Oildale (California) | 5,614.86 mi (9,036.24 km) |
| Hamm to Ojus (Florida) | 4,747.43 mi (7,640.25 km) |
| Hamm to Okemos (Michigan) | 4,079.41 mi (6,565.18 km) |
| Hamm to Oklahoma City (Oklahoma) | 4,921.59 mi (7,920.53 km) |
| Hamm to Okmulgee (Oklahoma) | 4,859.98 mi (7,821.38 km) |
| Hamm to Olathe (Kansas) | 4,645.56 mi (7,476.31 km) |
| Hamm to Old Jamestown (Missouri) | 4,485.05 mi (7,217.99 km) |
| Hamm to Oldsmar (Florida) | 4,742.21 mi (7,631.84 km) |
| Hamm to Olean (New York) | 3,884.76 mi (6,251.91 km) |
| Hamm to Olive Branch (Mississippi) | 4,667.47 mi (7,511.57 km) |
| Hamm to Olivehurst (California) | 5,464.50 mi (8,794.27 km) |
| Hamm to Olney (Maryland) | 3,968.82 mi (6,387.19 km) |
| Hamm to Olympia (Washington) | 5,017.94 mi (8,075.59 km) |
