Climbing 110 flights of stairs typically takes about 1.5 to 2 hours for most people, especially in events like the 9/11 Memorial Stair Climb where participants climb the equivalent of 110 stories (2,200 steps). This is a physically demanding challenge that tests cardiovascular endurance and leg strength, and the pace is usually steady rather than rushed to manage stamina.
On average, a person might climb at roughly 1 to 2 steps per second depending on fitness, but sustaining that over 110 flights is challenging. For example, one estimate for climbing 20 flights was about 7 to 10 minutes, scaling proportionally to 110 flights suggests roughly 40 to 55 minutes at a brisk pace, but actual times in organized events often approach up to 2 hours due to breaks, gear, and pacing.
In summary, expect between about 1.5 to 2 hours to climb 110 flights of stairs, depending on fitness, pace, breaks, and conditions.