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 🇻🇪 😉
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You can't start last week 👟
If you're suffering in your first weeks, the plan is badly designed — not you. 👟 Sat Sep 5 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Saturday September 5 · Week close We're closing the week from the absolute beginning. If you've never run, or you tried and quit, this is for you. No jargon, no complicated zones, nothing to buy. "You can't start last week, but you can start now." James...
READ POST"Do you think I'm ready?" — the 5 markers I check 🩸
Volume is visible. Biomarkers aren't — which is why they get ignored. 🩸 Fri Sep 4 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Friday September 4 · Short edition With the Chicago series underway, I'm getting messages from people asking whether they should sign up for a marathon. Today I'm giving you the five objective markers I review with my athletes before saying yes. The right question...
READ POSTRun your plan through these 5 questions 📋
Physiology doesn't negotiate with spreadsheet arithmetic. 📋 Thu Sep 3 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Thursday September 3 · Short edition Not everyone is running Chicago. If your goal is a half, today I'm helping with the decision most people skip: which plan to follow. Because the best plan in the world, badly chosen, delivers less than a modest one that actually fits you....
READ POSTChicago 2/7 🎯 "When did you run that 3:45?"
Your PR from a year ago describes a different person. Here's the real number. 🎯 🏙️ Chicago · D-39 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Wednesday September 2 · Chicago series · 2 of 7 Yesterday we talked about discipline over motivation. Today discipline becomes a number. A plan without a defined goal pace isn't a plan — it's an intention in running shoes. Let's calculate yours...
READ POSTThe 19-hour barrier fell ⛰️ (+ why motivation will fail you)
Motivation is the least reliable biological signal you have. 🧠 Tue Sep 1 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Tuesday September 1 · Weekly edition Happy start of the month. September is the month where a lot of fall plans break, and almost never from lack of physical capacity. Today we talk about why motivation is a terrible foundation to build on, and what replaces it. And...
READ POSTThere was a time Chicago seemed impossible to me 🌄
You're comparing your day one to someone else's day 500. 🌄 Sat Aug 29 · 🇺🇸 Home•Blog•News•Run With Us•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Saturday August 29 · Week close We're closing the week with something more personal. This week I announced a seven-edition series for a marathon I ran eight years ago. And putting it together reminded me of something I rarely mention: there was a time when that distance...
READ POSTThe problem isn't day one. It's day 19 📋
Almost everyone gets day one right. The problem shows up on day 19. 📋 Fri Aug 28 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Friday August 28 · Short edition Yesterday we covered the first four weeks. Today the question that follows: and then what? Running without a plan works for a month. Then the body adapts, progress stalls, and frustration arrives. Today I'll show you what a properly...
READ POST"I can't even run a 5K yet" 👟
Your heart adapts in weeks. Your tendons take months. That's the whole problem. 👟 Thu Aug 27 · 🇺🇸 Home•Blog•News•Share•Apply•Plans•Store 🌍 Receiving this in the wrong language? Update preferences in the footer → Español 🇪🇸 👋🏻 Hey Reader! Thursday August 27 · Short edition Yesterday we kicked off the Chicago series and several of you wrote me something along these lines: "Henri, I can't even run a 5K yet — this is way over my head." Relax. Today is for you. If you started recently or you're...
READ POSTChicago: 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...
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