The Tunnel to Towers Run & Walk is an endurance event held to honour the memory of Stephen Siller, a New York City firefighter who passed away on September 11, 2001, and to support first responders and military personnel. The event welcomes participants of all abilities, including those using strollers or wheelchairs, and features simple awards, especially for first responders and military participants. Safety protocols include bib requirements and on-site medical support. Proceeds benefit the Tunnel to Towers Foundation’s programs supporting first responders and military families.