Pushkar to Sambhar Lake Distance is 116 km approx.
Pushkar > Dantri ( 70 km )
Dantri > Dudu ( 16 km )
Dudu > Narena ( 15 km )
Narena > Sambhar Lake ( 15 km )
Leave National Highway 8 and follow the road (below the bridge) once you reach Dudu. Half km further drive a left turn for Sambhar lake which is a straight drive till you reach Sambhar lake.
fyi: Shakambhari Mata temple is approx. 23 km from Sambhar. Directions are there on the road.