More than 40,000 participants take part in the 25th annual Tunnel to Towers 5K Run & Walk NYC on Sunday, Sept. 27. The sold-out event honors FDNY firefighter Stephen Siller and those who lost their lives on Sept. 11, 2001.

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People participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants wearing firefighter gear take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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People participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk.A crowd of participants during the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A steel beam from the World Trade Center's South Tower is carried on a truck during the Tunnel to Towers NYC 5K Run & Walk.Participants pass a steel beam from the South Tower during the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Runners participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk.A runner carries an American flag toward the finish line during the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A runner in firefighter gear participates in the 25th annual Tunnel to Towers NYC 5K Run & Walk.A participant wearing takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A runner in a blue hoodie and sweatpants runs along a row of firefighters holding banners with images of fallen firefighters.A child high-fives officers holding tributes to fallen heroes at the finish line of the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A young boy with a running bib participates in the 25th annual Tunnel to Towers NYC 5K Run & Walk, surrounded by firefighters holding banners.A child high-fives officers holding tributes to fallen heroes at the finish line of the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A man dressed in firefighter gear holds his helmet as participants run in the Tunnel to Towers NYC 5K Run & Walk.Runners braved the nor’easter to participate in Sunday’s event. James Keivom for NY Post

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Participants in the Tunnel to Towers NYC 5K Run & Walk, two of whom hold portraits of uniformed individuals.Participants pass through the tunnel during the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Participants in the 25th annual Tunnel to Towers 5K Run & Walk NYC, including military personnel, run in the rain.People take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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People participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk, with first responders carrying a memorial banner for firefighter Stephen Siller and a flag with "343" to honor fallen firefighters.A photo of FDNY firefighter Stephen Siller at the finish line of the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Thousands of people, including firefighters in uniform, participate in the 25th annual Tunnel to Towers 5K Run & Walk NYC.Thousands participate in the 25th annual Tunnel to Towers 5K Run & Walk NYC on Sunday, September 27, 2026, in New York City. Michael Nigro for NY Post

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Participants, including firefighters in full gear and a runner with a race bib, run in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A police officer shaking hands with a runner at the 25th annual Tunnel to Towers NYC 5K Run & Walk.A runner at the finish line of the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Participants in the 25th annual Tunnel to Towers 5K Run & Walk NYC, including firefighters and a child on shoulders, walk on a wet street.The 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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A runner and a firefighter participate in the Tunnel to Towers NYC 5K Run & Walk.Participants come through the tunnel during the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A runner shakes hands with a first responder holding a memorial banner during the Tunnel to Towers NYC 5K Run & Walk.A participant at the finish line. James Keivom for NY Post

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Participants in firefighter gear and rain ponchos walk during the Tunnel to Towers 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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Participants in the Tunnel to Towers 5K Run & Walk NYC, including one wearing a firefighter's jacket and a flag with names on it.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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A firefighter in uniform with a red bandana and helmet runs past a tunnel entrance.A person takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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People participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A firefighter in uniform giving a thumbs up.A person takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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Participants of the Tunnel to Towers NYC 5K Run & Walk make their way through a tunnel.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A runner in full firefighter gear passes uniformed firefighters clapping along the race route of the Tunnel to Towers 5K.A person takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A firefighter in full gear and helmet during the 25th annual Tunnel to Towers NYC 5K Run & Walk.A person takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Participants in rain gear during the Tunnel to Towers NYC 5K Run & Walk.A steel beam from the World Trade Center’s South Tower is carried during the event. James Keivom for NY Post

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A runner with a prosthetic leg and another runner with their arms raised participate in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Participants, including firefighters, running in the annual Tunnel to Towers 5K Run & Walk NYC on a wet street.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post

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A woman in a neon yellow safety vest and clear poncho cheers with her arms raised during the Tunnel to Towers 5K Run & Walk.A person celebrates after completing the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A firefighter running the Tunnel to Towers NYC 5K Run & Walk.A person takes part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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Participants in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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A man in a light blue shirt, giving a thumbs up, and wearing a "Battalion Chief Jersey City" firefighter helmet, participates in the 25th annual Tunnel to Towers NYC 5K Run & Walk.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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People participate in the Tunnel to Towers NYC 5K Run & Walk, with an American flag prominent in the foreground.The 25th anniversary Tunnel to Towers 5K Run & Walk NYC. James Keivom for NY Post

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People participate in the 25th annual Tunnel to Towers 5K Run & Walk in New York City.Participants take part in the 25th anniversary Tunnel to Towers 5K Run & Walk NYC. Michael Nigro for NY Post