| South Plainfield to Odenton (Maryland) | 159.64 mi (256.91 km) |
| South Plainfield to Odessa (Texas) | 1,659.82 mi (2,671.23 km) |
| South Plainfield to Ogden (Utah) | 1,946.24 mi (3,132.18 km) |
| South Plainfield to Oildale (California) | 2,428.80 mi (3,908.77 km) |
| South Plainfield to Ojus (Florida) | 1,062.52 mi (1,709.96 km) |
| South Plainfield to Okemos (Michigan) | 536.48 mi (863.38 km) |
| South Plainfield to Oklahoma City (Oklahoma) | 1,301.56 mi (2,094.66 km) |
| South Plainfield to Okmulgee (Oklahoma) | 1,219.53 mi (1,962.64 km) |
| South Plainfield to Olathe (Kansas) | 1,088.09 mi (1,751.11 km) |
| South Plainfield to Old Jamestown (Missouri) | 850.83 mi (1,369.28 km) |
| South Plainfield to Oldsmar (Florida) | 984.12 mi (1,583.78 km) |
| South Plainfield to Olean (New York) | 232.95 mi (374.89 km) |
| South Plainfield to Olive Branch (Mississippi) | 926.09 mi (1,490.39 km) |
| South Plainfield to Olivehurst (California) | 2,473.34 mi (3,980.46 km) |
| South Plainfield to Olney (Maryland) | 171.99 mi (276.80 km) |
