| Thornton to Pell City (Alabama) | 4,173.22 mi (6,716.15 km) |
| Thornton to Pella (Iowa) | 4,028.59 mi (6,483.39 km) |
| Thornton to Pembroke Pines (Florida) | 4,326.93 mi (6,963.53 km) |
| Thornton to Pendleton (Oregon) | 4,632.30 mi (7,454.96 km) |
| Thornton to Pensacola (Florida) | 4,369.84 mi (7,032.57 km) |
| Thornton to Peoria (Arizona) | 5,106.76 mi (8,218.53 km) |
| Thornton to Peoria (Illinois) | 3,940.60 mi (6,341.78 km) |
| Thornton to Perris (California) | 5,265.66 mi (8,474.26 km) |
| Thornton to Perry (Georgia) | 4,129.10 mi (6,645.15 km) |
| Thornton to Perry Hall (Maryland) | 3,503.90 mi (5,638.99 km) |
| Thornton to Perrysburg (Ohio) | 3,679.96 mi (5,922.33 km) |
| Thornton to Perth Amboy (New Jersey) | 3,365.65 mi (5,416.49 km) |
| Thornton to Peru (Indiana) | 3,808.68 mi (6,129.48 km) |
| Thornton to Petal (Mississippi) | 4,402.60 mi (7,085.30 km) |
| Thornton to Petaluma (California) | 5,168.85 mi (8,318.47 km) |
