Endurance Mindset · The Running Newsletter
👋 I'm Henri — certified running coach, exercise scientist, and runner. I've spent over a decade coaching endurance athletes across the US, Colombia, and Venezuela — from first-time 5K runners to advanced marathoners. Endurance Mindset is the science-based running newsletter built for runners who want to train smarter. Every week: real training science, practical application, and the most relevant news from the running world — no fluff. 🙏 Pray · Love · Run 🏃♂️ 🇻🇪 También en Español 🇻🇪 😉
Subscribe to get all my latest posts
Chicago: 46 days 🏙️ The series begins (1 of 7)
46 days to Chicago. The 7-edition series starts now. 🏙️ 🏙️ Chicago 2026 · D-46 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Wednesday August 26 · Chicago series · 1 of 7 Yesterday I announced the campaign. Today it starts for real. Over the next seven Wednesday editions we're building the complete preparation for the Chicago Marathon together. The last one lands October 7, four days before the...
READ POSTThe half marathon world record fell in Buenos Aires 🇦🇷 (+ Chicago starts)
56:51 in Buenos Aires. And the Chicago campaign starts now. 🇦🇷 Tue Aug 25 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Tuesday August 25 · Weekly edition Happy start of the week to all my readers, and thank you for the chance and the loyalty. Remember Endurance Mindset runs Tuesday through Saturday. And this weekend had everything — above all in Buenos Aires, where the half marathon world...
READ POST"I show up to every session already tired" 😮💨
Exhaustion isn't the price of improving. It's a signal something needs adjusting. 😮💨 Sat Aug 22 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Saturday August 22 · Week close An athlete wrote to me a few weeks ago: "Henri, I'm doing the sessions, but I show up to each one already tired. And I finish worse than I started." He wasn't talking about a bad day. He was describing a pattern of weeks....
READ POSTThe 10K is not a stretched 5K 🌉
The 10K isn't a stretched 5K. It's a different physiological beast — and it trains differently. 🌉 Fri Aug 21 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Friday August 21 · Short edition Every summer I get the same message: "I've run a decent 5K — now what do I do for the 10K?" And the answer almost nobody wants to hear is that it isn't about running twice as far with the same training. Treat...
READ POSTS to Z: closing the runner's alphabet 🔤
Closing the alphabet. Eight letters that explain why you train the way you train. 🔤 Thu Aug 20 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Thursday August 20 · Short edition We've reached the end of the alphabet. Four parts, twenty-six letters — and today we close with the last eight. It's no coincidence that the final letters include the concepts that generate the most questions from my...
READ POST222 seconds: the record he announced before breaking it 🎯 (+ Josh Kerr)
Josh Kerr announced the record before he broke it. That decision is the part you can use. 🎯 Wed Aug 19 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Wednesday August 19 · Short edition Yesterday we talked about choosing your fall race. Today I'm bringing you the other half of that conversation — and it's what I promised you. At the London Diamond League, Josh Kerr ran the mile in 3:42.66 and...
READ POSTFall races are won in August 🍂 (+ Carl Lewis)
The Europeans closed in Birmingham. And your fall season starts this week — not in October. 🍂 Tue Aug 18 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Tuesday August 18 · Weekly edition Happy start of the week, Endurance Mindset readers. To everyone who just joined: thank you for the chance and welcome to this community that keeps growing. We start our week on Tuesdays and run through Saturdays....
READ POST5K fundamentals — how to get to sub 30 minutes 🏃 (+ December series)
Sub 30 in the 5K is not about speed — it is about the aerobic base most people skip. The 4 fundamentals and the 12-week block. 🏃 Sat Aug 15 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Saturday August 15 · Runner's Notebook — Page 3 Closing the week with something practical — and a preview of what is coming in December. The 5K is the distance most people want to improve and where the most...
READ POSTWhy running beats cycling in preseason 🏃 (and the concrete protocol)
Looking for neuroscience articles, I found something unexpected: running beats cycling nearly 2 to 1 for abdominal fat — at equal caloric cost. 🏃 Fri Aug 14 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Friday August 14 · Runner's Notebook — Page 1 I was looking for neuroscience articles for the topic I had planned today — running with purpose — when I came across something I was not looking...
READ POST