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Running 100-mile weeks as I turn 45.

4 min readMar 24, 2025

Tomorrow I turn 45.

In less than a month I’m running my first Boston marathon and have been putting in more miles than ever before:

Never an athlete in my younger years, here I am — training like a semi-pro. But I’m not a semi-pro. I just love running. I always enjoyed running. In my twenties and thirties my running was on and off in terms of consistency but I always enjoyed it. My best marathon was 3.54 in New York in 2010. I was twenty nine at the time. Then for over a decade I didn’t run any races.

The pandemic year was a watershed moment in my running journey. While the world came to a standstill, I started to run consistently and introduced variety to my running — intervals for example. I didn’t have any goals, but somehow running became a habit and improved a lot.

The rest is history as the cliche expression goes.

I ran my first sub 3 marathon in the fall of 21 and then ran 5 more, PRing at 2.43 in 2024.

The last six months have been a roller coaster — a lower back injury and hernia surgery lead to the first major disruption to my running in years. In the fall of last year I was out of running for many weeks. During that time I also moved from California to North Carolina. Restarting my running journey felt like I had left an era behind and the new…

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Alexei Sorokin
Alexei Sorokin

Written by Alexei Sorokin

A Russian immigrant in America, father of four, Cambridge & Harvard Business School alum, runner. https://runningwritingliving.substack.com/

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