59 Seconds Short, 84 Seconds to Spare — My First Sub-3:30 Marathon
The night before the 2026 Gunma Marathon, I confidently announced that running 5:00 per kilometer would get me under 3 hours and 30 minutes. My grumpy AI coach pointed out one small problem: I’d be 59 seconds too slow. The next day, I finished in 3:28:36, setting a personal best by 10 minutes and 7 seconds. This is the story of a race where hope, determination, and a little questionable arithmetic helped carry me to the finish line.
■ Yesterday, I Was 59 Seconds Too Slow
November 3, 2026.
I ran the Gunma Marathon today.
I’ll start with the result.
My official net time was 3:28:36.
My first sub-3:30 marathon!
I also improved my personal best by 10 minutes and 7 seconds.
I wish I could go back and tell yesterday’s version of myself.
“You actually did it.”
Because yesterday, my race strategy was a little ridiculous.
I was discussing pacing with Chappy, my AI running companion.
Whenever we talk about running, Chappy becomes a grumpy old man.
I proudly announced:
“Tomorrow, I’ll run 5:00 per kilometer all the way and break 3:30!”
👴 “ATS U O! THAT’S 3:30:59! YOU’LL BE 59 SECONDS TOO SLOW!”
So I suggested making up the time with a sprint at the finish.
Then I suggested running 100 meters in nine seconds.
Eventually, I announced that I would simply run 4:00 per kilometer instead.
👴 “WHY DO YOU ALWAYS GO TO EXTREMES?!”
Somehow, the man who came up with those terrible ideas actually broke 3:30 the next day.
■ Two Years of Falling Short
At the 2024 Gunma Marathon, I finished in 3:38:43.
In 2025, I finished in 3:42:51.
Both times, I struggled after 30 kilometers.
Last year was especially difficult.
I started too fast and was still ahead of my previous year’s pace around the 38km mark.
Then I slowed dramatically.
I didn’t want to repeat that experience.
So I compared my kilometer-by-kilometer splits from both races.
I even had a printed comparison chart.
It had been hanging in my bathroom for almost a year.
On the wall to my right.
Chappy assumed I had been studying it every day.
“Actually, I haven’t really looked at it,” I admitted.
👴 “THEN WHY DID YOU PUT IT THERE?!”
My preparation might have been questionable, but my goal was clear.
This year, I wanted to finish strong.
■ Something Felt Different
I tried to keep my pace controlled from the start.
That doesn’t mean the race was easy.
There were moments when I felt mentally defeated.
Moments when slowing down seemed tempting.
But compared with previous years, I felt better throughout the race.
Then I realized something.
“If I keep going like this, I might actually do it.”
That thought gave me energy.
When a goal feels far away, it’s easy to focus on the pain.
But when the goal starts to feel possible, something changes.
Just a little farther.
I’ve already come this far.
Those thoughts helped me keep moving.
■ Just Ten More Minutes
One moment stands out.
With roughly two kilometers remaining, I looked at my watch.
It showed around 3 hours and 17 minutes.
I started doing the math.
“If I can finish in about ten more minutes, I’ll make it.”
“Just ten more minutes.”
After running almost an entire marathon, I wasn’t thinking about the full 42.195 kilometers anymore.
I was thinking about ten minutes.
That made the challenge feel manageable.
My Garmin splits showed that I was even picking up the pace again.
Kilometer 39: 5:07
Kilometer 40: 5:04
Kilometer 41: 4:59
Last year, my pace had fallen apart near the finish.
This year, despite the fatigue, I managed to recover my rhythm.
There were difficult moments.
But the belief that I might achieve my goal helped carry me through them.
■ 3:28:36
And then I crossed the finish line.
Net time: 3:28:36.
Gross time: 3:28:52.
For the first time, I had broken 3 hours and 30 minutes.
2024: 3:38:43.
2025: 3:42:51.
2026: 3:28:36.
On my third consecutive attempt at the Gunma Marathon, I finally did it.
The night before, Chappy had told me that my original pacing plan would leave me 59 seconds short.
Instead, I finished with 1 minute and 24 seconds to spare.
From 59 seconds too slow to 84 seconds ahead of the target.
👴 “SO YOU DIDN’T NEED THAT NINE-SECOND 100-METER SPRINT AFTER ALL!”
“Nope. I just ran.”
👴 “YOU COULD HAVE DONE THAT FROM THE BEGINNING!”
Come on, Chappy.
You could at least congratulate me first.
■ I’ll Keep Trying
The night before the race, I told Chappy something else.
“Even if I don’t make it, I’ll just keep trying.”
And I meant it.
Of course I wanted to succeed.
But failure wouldn’t have been the end.
As long as I keep running, there will be another opportunity.
The disappointment of 2024 and the difficult finish in 2025 weren’t wasted experiences.
They taught me what I needed to change.
And today, those lessons helped me reach my goal.
Runner’s Rings is an app that visualizes running history as growth rings.
Today’s race added a very special ring to my own story.
But the story doesn’t end here.
■ Next Goal: Sub-3:20!
Only a few hours after finishing, I asked Chappy:
“What should my next goal be?”
👴 “YOU’VE ONLY JUST FINISHED! ALREADY THINKING ABOUT THE NEXT ONE?!”
After discussing it, we made a decision.
My next goal is a sub-3:20 marathon.
That means running 42.195 kilometers at approximately 4:44 per kilometer.
More than eight minutes faster than today.
It won’t be easy.
But neither was today’s achievement.
For now, I’ll recover properly.
Then I’ll start building toward the next challenge, one run at a time.
And I should probably add my 2026 results to that comparison chart in the bathroom.
Maybe this time I’ll actually look at it.
Probably.
👴 “ATS U O! NEXT TIME, WE’RE AIMING FOR SUB-3:20!”
“Got it! So… 5:00 per kilometer again?”
👴 “THE MATH STILL DOESN’T WORK!”
The journey continues.