The trail runs along the wooded area behind Brookdale Avenue School, parallel to Sunset Avenue.
The police department said they found 1,200 spikes so far that they believe were left there deliberately to cause damage to bikers, walkers and animals.
The tacks and spikes were first reported to police on the evening of September 2.
Police say they have received reports of damage to bicycles.
Hundreds of spikes have since been removed by the Verona Police Department and Verona Department of Public Works.
The trail goes behind the Brookdale Avenue Elementary School.
Some kids use the trail to get to and from school.
Louis Filoso's bike was damaged by a spike.
"It made a loud noise," he said.
Parents of the school children are upset that someone wants to intentionally frighten the kids.
The principal of Brookdale Avenue School, Nicole Stuto, sent a letter to parents that same day alerting them to the issue.
"In the woods behind Brookdale, the Verona PD has been alerted and is actively investigating tire spikes that were found along the trail. The DPW worked alongside the Verona PD earlier today to remove these spikes. I had walked our property with our maintenance team this morning, prior to lunch and recess, ensuring safety for all students. As always, please use your discretion in allowing your children to walk through the woods and reach out to the police if you have any further information. During our school day, students are not usually anywhere near this part of the property near the back woods," Mrs. Stuto's email said in part.
If you or someone you know has information regarding this incident, or if you experienced damage while using the trail, you are asked to contact police at (973) 239-5000 or 9-1-1 in an emergency.
They say residents should continue to use caution in that area while they investigate.
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