noun
whereabouts; present location
Refers to the current location or whereabouts of a person, often used when the location is unknown or being sought.
彼の立ち回り先がわからない。
I don't know his whereabouts.
居場所 is more common and general for 'whereabouts' or 'place to be', while 立ち回り先 is rarer and may carry a nuance of moving around or being on the move.
Compound of 立ち回り (たちまわり, 'moving about') + 先 (さき, 'destination' or 'place'). The exact historical derivation is uncertain.