Yes, if ur driving a donkey cart - otherwise its 3-4 miniutes as its just 6 km.
If someone want a great trip here is a great off-road excursion..If ur travelling on the Lahore-Islamabad motorway (Lahore side) take lilla interchange just before Salt range and 20 km later u be in Khewra - u can see teh great salt mine in 2-3 hours.. instead of going back take a road that swings north of the salt mines towards Choa Sedan Shah.. ur for agreat treat as the trip is very scenic.. after crossing the small town u will hit the famous Katas Temples.. spend 1-2 hours there at the lake and temples.. continue for further 20 km and u will hit famous Kalar Kahar Lake.. have tea at PMDFC resort hotel.. u can join the motorway here towards Islamabad.. if ur coming from Islamabad get off at Kalar Kahar Interchange and reverse the sequence.. believe me its worth the experience..