MANHATTAN, N.Y. — The Tunnel to Towers Foundation's annual Tower Climb will return this summer after being canceled the last two years amid the coronavirus pandemic.

The event will be held at One World Observatory on June 5, the organization announced Monday.

Participants will climb the 2,226 steps to the top of the building with members of the NYPD, FDNY, Port Authority Police Department and New York State Court Officers.

This year, the climb - which was first held in May 2015 - will honor 9/11first responders who died in the terror attacks or from related illnesses in the years after.

Registration for the event is open at T2T.org, but space is limited to just 1,000 participants.

The Tunnel to Towers Foundation has announced that Erika Oelkers will serve as this year's honorary starter. Oelkers husband, FDNY firefighter Thomas Oelkers, died in May 2021 from a 9/11-related illness.

Last June, the foundation announced it had also paid off the mortgage on Oelker's home, as part of a new effort to pay off mortgages for first responders who lose their lives to a 9/11-related illness and leave behind young children.

The climb helps support the Tunnel to Towers Foundation and the Captain Billy Burke Jr. Foundation - which provides college tuition assistance to children of FDNY firefighters at SUNY Potsdam, Burke's alma mater.