It was 10:00 PM, thirteen hours into a 24-hour ultramarathon. My feet screamed at me, my left ankle was starting to act up, and everything that had been loose and free only five hours earlier in the sunlight was now tight and difficult. After thirteen hours on my feet, every step hurt. But I was determined to keep moving for 24 hours, determined to finish what I started despite the pain.

I looked down at my Garmin and it told me I’d taken about 88,000 steps so far that day. I knew that in shorter, faster runs I take about 2,000 steps per mile. Two hours equals six miles equals 12,000 steps. In short, I was very, very close to hitting 100,000 steps by midnight.

100,000 steps in one day. Before I started distance running I had been skeptical that people could average even 10,000 steps a day, so being on the edge of 100,000 felt like I was close to doing something far beyond what I had once thought possible.

By 11:45, the hours of movement had caught up to me and I had slowed to a walk. Even that was difficult. Every step hurt and the urge to stop was intense. I was not at all sure I could keep even that walking pace up for another nine hours to finish the race. I was giving it everything I had just to keep going at all.

At 11:53, I looked down at my watch and saw 98,608 steps. 1,400 steps. Less than a mile in seven minutes? I would never make it walking, I thought. But I also knew that if I pushed, there might be a chance.

And so I started running as fast as I could. Looking at the data afterward, I can see that what felt like running all out was about equal to a light jog when I’m fresh.

Had I been less exhausted, maybe I would have done the math and known it was hopeless, but instead I kept running, trying to take short, quick steps, hoping Garmin counted footfalls and not distance, trying to get to 100,000.

I did not get there. I finished the day with 99,248 steps.

But for those seven minutes, I pushed myself faster and harder than I thought I could go. Once I had a reason, even one as meaningless as having a big round number show on my Garmin, I was able to push myself well past the point where I thought I would break.

Same body. Same race. Same fatigue. Same pain. One minute I was moving at what felt like the outer edge of what I had. The next minute I was producing significantly more.

The pain and exhaustion were real, but my understanding of them was incomplete. At 11:52 PM, I experienced myself as close to empty. At 11:53 PM, a meaningless number on a watch produced a much higher level of output almost immediately. Nothing important changed physically in that sixty-second window. Motivation changed. Belief changed. Output changed.

That should make a person suspicious of his own internal narratives. Sometimes “I have nothing left” means something more like “I am no longer willing to spend what this would cost.”

In my case, seven minutes of caring about a round number produced a far faster pace than the seven minutes immediately before. Not after sleep. Not after recovery. Not after a pep talk. Immediately.

Which means the limiting factor in that moment was not simply my legs, my lungs, or my heart. It was the governor in my head. The body had real constraints, but the ceiling I was obeying was lower than the ceiling that actually existed.

Pain is real. Fatigue is real. Damage is real. There are limits the body does not negotiate with. But there is also a broad territory between true incapacity and the point where the mind begins arguing for caution, conservation, and relief. That territory is larger than most people want to admit.

I also discovered that my sense of being near empty was not a fact. It was an interpretation, a self-imposed limit. If I could push that much harder for a meaningless number, then the question is what becomes possible when the stakes actually matter.

That is a useful thing to know. Not just in running, but anywhere a person is tempted to confuse what feels final with what actually is.