PARKVILLE, MD—An annual tradition returned to Parkville on Saturday morning.

To mark the 20th anniversary of the September 11 terrorist attacks, the Patriot Day Ride made its way down Harford Road.

The annual trek begins at the Darlington Volunteer Fire Company and ends at Putty Hill Avenue, where a bell-tolling ceremony is held to honor the lives lost of 9/11.

This year, hundreds of motorcycles made their way down Harford Road at around noon.

View video of the event below.