| Willoughby to Montana | 4,930.87 mi (7,935.47 km) |
| Willoughby to Nova Zagora | 5,078.90 mi (8,173.70 km) |
| Willoughby to Novi Iskar | 4,962.99 mi (7,987.17 km) |
| Willoughby to Novi Pazar | 5,083.50 mi (8,181.10 km) |
| Willoughby to Omurtag | 5,065.92 mi (8,152.81 km) |
| Willoughby to Panagyurishte | 5,008.61 mi (8,060.57 km) |
| Willoughby to Parvomay | 5,066.52 mi (8,153.77 km) |
| Willoughby to Pavlikeni | 5,018.16 mi (8,075.95 km) |
| Willoughby to Pazardzhik | 5,028.00 mi (8,091.78 km) |
| Willoughby to Pernik | 4,959.72 mi (7,981.89 km) |
| Willoughby to Peshtera | 5,034.29 mi (8,101.91 km) |
| Willoughby to Petrich | 5,020.62 mi (8,079.90 km) |
| Willoughby to Pleven | 4,984.13 mi (8,021.18 km) |
| Willoughby to Plovdiv | 5,046.32 mi (8,121.26 km) |
| Willoughby to Pomorie | 5,135.57 mi (8,264.90 km) |
