| Rorschach to Odessa (Texas) | 5,519.69 mi (8,883.08 km) |
| Rorschach to Ogden (Utah) | 5,339.33 mi (8,592.83 km) |
| Rorschach to Oildale (California) | 5,885.34 mi (9,471.53 km) |
| Rorschach to Ojus (Florida) | 4,903.30 mi (7,891.09 km) |
| Rorschach to Okemos (Michigan) | 4,299.90 mi (6,920.01 km) |
| Rorschach to Oklahoma City (Oklahoma) | 5,150.59 mi (8,289.08 km) |
| Rorschach to Okmulgee (Oklahoma) | 5,085.99 mi (8,185.11 km) |
| Rorschach to Olathe (Kansas) | 4,876.93 mi (7,848.66 km) |
| Rorschach to Old Jamestown (Missouri) | 4,706.72 mi (7,574.74 km) |
| Rorschach to Oldsmar (Florida) | 4,912.47 mi (7,905.86 km) |
| Rorschach to Olean (New York) | 4,090.71 mi (6,583.36 km) |
| Rorschach to Olive Branch (Mississippi) | 4,877.54 mi (7,849.64 km) |
| Rorschach to Olivehurst (California) | 5,742.77 mi (9,242.10 km) |
| Rorschach to Olney (Maryland) | 4,161.34 mi (6,697.03 km) |
| Rorschach to Olympia (Washington) | 5,305.06 mi (8,537.66 km) |
