| Willoughby to Pittsburg (California) | 2,142.99 mi (3,448.80 km) |
| Willoughby to Pittsburg (Kansas) | 765.21 mi (1,231.49 km) |
| Willoughby to Pittsburgh (Pennsylvania) | 111.87 mi (180.03 km) |
| Willoughby to Pittsfield (Massachusetts) | 421.57 mi (678.45 km) |
| Willoughby to Placentia (California) | 2,045.21 mi (3,291.45 km) |
| Willoughby to Placerville (California) | 2,070.69 mi (3,332.45 km) |
| Willoughby to Plainfield (Illinois) | 351.95 mi (566.40 km) |
| Willoughby to Plainfield (Indiana) | 292.87 mi (471.33 km) |
| Willoughby to Plainfield (New Jersey) | 370.70 mi (596.59 km) |
| Willoughby to Plainview (New York) | 416.56 mi (670.40 km) |
| Willoughby to Plainview (Texas) | 1,217.24 mi (1,958.96 km) |
| Willoughby to Plano (Illinois) | 367.48 mi (591.40 km) |
| Willoughby to Plano (Texas) | 1,028.32 mi (1,654.92 km) |
| Willoughby to Plant City (Florida) | 942.73 mi (1,517.17 km) |
| Willoughby to Plantation (Florida) | 1,074.31 mi (1,728.94 km) |
