| Thornton to Pittsburg (Kansas) | 4,295.33 mi (6,912.67 km) |
| Thornton to Pittsburgh (Pennsylvania) | 3,591.77 mi (5,780.39 km) |
| Thornton to Pittsfield (Massachusetts) | 3,238.94 mi (5,212.56 km) |
| Thornton to Placentia (California) | 5,280.28 mi (8,497.79 km) |
| Thornton to Placerville (California) | 5,087.63 mi (8,187.75 km) |
| Thornton to Plainfield (Illinois) | 3,847.03 mi (6,191.19 km) |
| Thornton to Plainfield (Indiana) | 3,871.37 mi (6,230.37 km) |
| Thornton to Plainfield (New Jersey) | 3,366.93 mi (5,418.56 km) |
| Thornton to Plainview (New York) | 3,322.18 mi (5,346.53 km) |
| Thornton to Plainview (Texas) | 4,719.57 mi (7,595.42 km) |
| Thornton to Plano (Illinois) | 3,855.56 mi (6,204.93 km) |
| Thornton to Plano (Texas) | 4,598.98 mi (7,401.35 km) |
| Thornton to Plant City (Florida) | 4,294.35 mi (6,911.08 km) |
| Thornton to Plantation (Florida) | 4,317.91 mi (6,949.01 km) |
| Thornton to Platteville (Wisconsin) | 3,875.23 mi (6,236.58 km) |
