| Romeoville to Penne | 4,872.05 mi (7,840.80 km) |
| Romeoville to Pergine Valsugana | 4,613.79 mi (7,425.17 km) |
| Romeoville to Perugia | 4,782.97 mi (7,697.44 km) |
| Romeoville to Pesaro | 4,768.73 mi (7,674.52 km) |
| Romeoville to Pescantina | 4,623.65 mi (7,441.05 km) |
| Romeoville to Pescara | 4,883.17 mi (7,858.70 km) |
| Romeoville to Peschiera del Garda | 4,618.56 mi (7,432.86 km) |
| Romeoville to Pescia | 4,682.23 mi (7,535.32 km) |
| Romeoville to Petilia Policastro | 5,135.33 mi (8,264.51 km) |
| Romeoville to Piacenza | 4,595.75 mi (7,396.14 km) |
| Romeoville to Pianella | 4,879.50 mi (7,852.79 km) |
| Romeoville to Pianezza | 4,507.93 mi (7,254.81 km) |
| Romeoville to Pianiga | 4,668.89 mi (7,513.86 km) |
| Romeoville to Piano di Sorrento | 4,971.64 mi (8,001.08 km) |
| Romeoville to Pianoro | 4,687.57 mi (7,543.91 km) |
