| Gaithersburg to Penne | 4,525.57 mi (7,283.19 km) |
| Gaithersburg to Pergine Valsugana | 4,285.41 mi (6,896.71 km) |
| Gaithersburg to Perugia | 4,435.59 mi (7,138.40 km) |
| Gaithersburg to Pesaro | 4,429.48 mi (7,128.55 km) |
| Gaithersburg to Pescantina | 4,289.23 mi (6,902.84 km) |
| Gaithersburg to Pescara | 4,537.96 mi (7,303.15 km) |
| Gaithersburg to Peschiera del Garda | 4,283.13 mi (6,893.03 km) |
| Gaithersburg to Pescia | 4,334.59 mi (6,975.85 km) |
| Gaithersburg to Petilia Policastro | 4,776.42 mi (7,686.91 km) |
| Gaithersburg to Piacenza | 4,253.62 mi (6,845.54 km) |
| Gaithersburg to Pianella | 4,533.17 mi (7,295.43 km) |
| Gaithersburg to Pianezza | 4,158.65 mi (6,692.70 km) |
| Gaithersburg to Pianiga | 4,338.44 mi (6,982.04 km) |
| Gaithersburg to Piano di Sorrento | 4,613.78 mi (7,425.16 km) |
| Gaithersburg to Pianoro | 4,346.08 mi (6,994.34 km) |
