| Petersfield to Olympia Heights (Florida) | 4,407.75 mi (7,093.59 km) |
| Petersfield to Omaha (Nebraska) | 4,279.67 mi (6,887.46 km) |
| Petersfield to On Top of the World Designated Place (Florida) | 4,322.83 mi (6,956.92 km) |
| Petersfield to Onalaska (Wisconsin) | 3,975.91 mi (6,398.61 km) |
| Petersfield to Oneida (New York) | 3,407.34 mi (5,483.59 km) |
| Petersfield to Oneonta (New York) | 3,409.02 mi (5,486.29 km) |
| Petersfield to Ontario (California) | 5,417.25 mi (8,718.21 km) |
| Petersfield to Ontario (Oregon) | 4,838.67 mi (7,787.08 km) |
| Petersfield to Opa-locka (Florida) | 4,395.37 mi (7,073.66 km) |
| Petersfield to Opelika (Alabama) | 4,278.02 mi (6,884.80 km) |
| Petersfield to Opelousas (Louisiana) | 4,658.49 mi (7,497.11 km) |
| Petersfield to Orange (California) | 5,437.66 mi (8,751.06 km) |
| Petersfield to Orange (Texas) | 4,746.83 mi (7,639.28 km) |
| Petersfield to Orange City (Florida) | 4,288.93 mi (6,902.36 km) |
| Petersfield to Orangeburg (South Carolina) | 4,050.59 mi (6,518.79 km) |
