This from New York 1:

More than 15,000 people are expected to run Sunday in the fifth annual Tunnel to Towers Run in honor of a Staten Island firefighter who died in the September 11th attacks.

The run kicks off in Brooklyn, then proceeds through the Brooklyn Battery Tunnel to the World Trade Center site.

The three-mile route traces the path of firefighter Stephen Siller, who ran though the tunnel with his gear when he found he wasn’t allowed to drive through.

Participants, who come from all over the country, say the race is chance to remember the many lives lost.

“Anybody can make the walk,” said five-time participant Randy Payne. “You can run it, whatever you want to do. But when you pass through the tunnel and there are all of those faces on the banners of everyone who passed away that day, it is very, very emotional and it really hits you what happened that day."

Registration is still open for the run, which begins at 10 a.m. For more information, visit www.TunnelToTowersRun.org.