| Thornton to Montana | 1,340.81 mi (2,157.83 km) |
| Thornton to Nova Zagora | 1,488.81 mi (2,396.00 km) |
| Thornton to Novi Iskar | 1,373.57 mi (2,210.55 km) |
| Thornton to Novi Pazar | 1,496.44 mi (2,408.28 km) |
| Thornton to Omurtag | 1,476.96 mi (2,376.93 km) |
| Thornton to Panagyurishte | 1,418.84 mi (2,283.40 km) |
| Thornton to Parvomay | 1,476.47 mi (2,376.15 km) |
| Thornton to Pavlikeni | 1,428.34 mi (2,298.69 km) |
| Thornton to Pazardzhik | 1,438.51 mi (2,315.05 km) |
| Thornton to Pernik | 1,371.09 mi (2,206.56 km) |
| Thornton to Peshtera | 1,445.11 mi (2,325.68 km) |
| Thornton to Petrich | 1,435.37 mi (2,310.00 km) |
| Thornton to Pleven | 1,394.05 mi (2,243.51 km) |
| Thornton to Plovdiv | 1,456.52 mi (2,344.04 km) |
| Thornton to Pomorie | 1,547.12 mi (2,489.85 km) |
