| Wallingford Center to Odenton (Maryland) | 262.39 mi (422.27 km) |
| Wallingford Center to Odessa (Texas) | 1,754.12 mi (2,822.99 km) |
| Wallingford Center to Ogden (Utah) | 2,013.32 mi (3,240.13 km) |
| Wallingford Center to Oildale (California) | 2,505.12 mi (4,031.59 km) |
| Wallingford Center to Ojus (Florida) | 1,149.54 mi (1,850.01 km) |
| Wallingford Center to Okemos (Michigan) | 600.42 mi (966.28 km) |
| Wallingford Center to Oklahoma City (Oklahoma) | 1,393.01 mi (2,241.83 km) |
| Wallingford Center to Okmulgee (Oklahoma) | 1,311.88 mi (2,111.26 km) |
| Wallingford Center to Olathe (Kansas) | 1,171.84 mi (1,885.89 km) |
| Wallingford Center to Old Jamestown (Missouri) | 938.24 mi (1,509.94 km) |
| Wallingford Center to Oldsmar (Florida) | 1,079.87 mi (1,737.88 km) |
| Wallingford Center to Olean (New York) | 292.50 mi (470.73 km) |
| Wallingford Center to Olive Branch (Mississippi) | 1,025.03 mi (1,649.63 km) |
| Wallingford Center to Olivehurst (California) | 2,540.65 mi (4,088.79 km) |
| Wallingford Center to Olney (Maryland) | 274.80 mi (442.25 km) |
