Sub-4 Hour Marathon: Three Pace Plans That Actually Work
August 23, 2026 - The textbook, the pro playbook, and the founder's honest hold-on method, each as a live plan.
Plan your pace, build a race-day strategy, and see what your training races predict. Free, fast, and no signup.
The last 10K is where you meet yourself.
Even splits or a custom segment strategy: settle in for 20 miles, then finish fast. Every pace change is mapped mile by mile.
Race equivalency that asks the real question: did you do the training, or are you gutting it out? See the math.
Every plan gets a link that rebuilds it exactly, plus a printable download you can hand to a coach or tape to the fridge.
This site has one purpose: help you run your race. No ads, no signup, no cookies, no upsell. The only measurement is an anonymous visit count, spelled out on our privacy page. It's built marathon-first because 26.2 is the distance that changes people, but every tool works for the half, 10K, 5K, and custom distances too.
Behind it are 40+ years of running and 20+ marathon finishes, including plenty of hard lessons about fast starts and skipped long runs. The whole project is open source on GitHub: read the math, suggest a feature, or argue with our pacing philosophy. Here's how we built it.
August 23, 2026 - The textbook, the pro playbook, and the founder's honest hold-on method, each as a live plan.
June 1, 2026 - The corporate marathon model is facing a bust, but the marathon mindset is more powerful than ever.
December 30, 2025 - Why running a marathon is symbolic for achieving bigger personal and life goals.
August 23, 2025 - A printed pace chart and PR tracker on a shoebox offers old-school motivation.
December 20, 2024 - A runner's roundup of the best marathon calculators out there.
October 4, 2024 - Help shape the future of these free running tools.