From the bench overlook, it's about a half-mile to Triple Falls.
Making sure you don't go back the way you just came, head down the wide dirt road to a junction and sign pointing to Triple Falls.
The falls are about .2 mile up a fairly steep trail. Visually the falls are not nearly as impressive as the others in the park, but this is nevertheless a very serene, quiet stretch of forested trail.
The trail ends at a viewing stand at the base of Triple Falls. Rest there and retrace your steps.
You can follow Alec Canyon Trail all the way back to the parking lot.