Tarentum Annual Fall Festival Tarentum Riverview park First Ave. Tarentum PA 15084. Tarentum Fall Festival is a combination of crafters and carnival which creates and old fashion family festival. Very affordable for all.This years event will be held Sept 22,23,24 -2016. We are looking for vendors with unique crafts.$75.00 for 10x10 space (for 3 days).Bands bingo and great food nightly. Fun for all. Sponsored by Summit Hose Fire Co. and Tarentum Recreation Board.