| Pittsburgh to Oakleaf Plantation (Florida) | 717.28 mi (1,154.35 km) |
| Pittsburgh to Oakley (California) | 2,218.88 mi (3,570.95 km) |
| Pittsburgh to Oakton (Virginia) | 178.09 mi (286.61 km) |
| Pittsburgh to Oakville (Missouri) | 568.43 mi (914.80 km) |
| Pittsburgh to Oatfield (Oregon) | 2,157.54 mi (3,472.22 km) |
| Pittsburgh to Ocala (Florida) | 787.75 mi (1,267.76 km) |
| Pittsburgh to Ocean Acres (New Jersey) | 304.83 mi (490.58 km) |
| Pittsburgh to Ocean City (New Jersey) | 296.28 mi (476.81 km) |
| Pittsburgh to Ocean Pines (Maryland) | 294.15 mi (473.39 km) |
| Pittsburgh to Ocean Pointe (Hawaii) | 4,664.35 mi (7,506.55 km) |
| Pittsburgh to Ocean Springs (Mississippi) | 851.29 mi (1,370.01 km) |
| Pittsburgh to Oceanside (California) | 2,107.18 mi (3,391.18 km) |
| Pittsburgh to Oceanside (New York) | 333.11 mi (536.08 km) |
| Pittsburgh to Ocoee (Florida) | 824.19 mi (1,326.41 km) |
| Pittsburgh to Oconomowoc (Wisconsin) | 475.60 mi (765.41 km) |
