How to line up two audio tracks in Premiere Pro?
Audio in Premiere can be aligned by analysing two or more audio files and automatically comparing for similarity.

For the audio recorded on separate microphones, select both clips, right-click and select 'Synchronise'. Select 'Audio' as a synchronize point and press OK.



You can use the Source editor to fine-tune the in and out points to remove any silence before and after the microphone recording. 



This feature can be extremely useful for aligning multi-cam footage.