| Romeoville to Paimio | 4,383.74 mi (7,054.95 km) |
| Romeoville to Pargas | 4,379.51 mi (7,048.14 km) |
| Romeoville to Pedersore | 4,247.07 mi (6,835.00 km) |
| Romeoville to Pieksamaki | 4,414.39 mi (7,104.28 km) |
| Romeoville to Pirkkala | 4,364.58 mi (7,024.12 km) |
| Romeoville to Pori | 4,315.94 mi (6,945.83 km) |
| Romeoville to Porvoo | 4,463.96 mi (7,184.04 km) |
| Romeoville to Poytya | 4,369.61 mi (7,032.20 km) |
| Romeoville to Raahe | 4,245.98 mi (6,833.24 km) |
| Romeoville to Raisio | 4,368.05 mi (7,029.69 km) |
| Romeoville to Raseborg | 4,423.96 mi (7,119.67 km) |
| Romeoville to Rauma | 4,322.78 mi (6,956.84 km) |
| Romeoville to Riihimaki | 4,425.58 mi (7,122.28 km) |
| Romeoville to Rovaniemi | 4,196.55 mi (6,753.70 km) |
| Romeoville to Saaminki | 4,476.38 mi (7,204.03 km) |
