Get the 80/20 Endurance Advantage!
Featuring the proven 80/20 intensity balance described in Matt Fitzgerald's bestselling book 80/20 Running, this Ultra 100 Mile Level 1 training plan will provide you with the same workout structure used by the most successful runners in the world.
Who is this plan for?
This plan is appropriate for newer runners preparing for their first Ultra, masters athletes, or for more experienced runners who need or prefer a relatively low-volume training program. Before you begin the plan, build your training to the point where you are running at least 3x per week with the longest run of 10 miles or more.
How Do I Measure My Intensity?
This plan presents each workout's intensity target by Pace but Heart Rate and Power versions of this plan are also available. Each workout can be exported to a supported device, which will automatically guide you through the session with duration, lap, and intensity prompts. See our Structured Workout page for more information.
Do You Have a Guarantee?
Not sure which level is right for you? Review our Level Comparison Charts to find the best fit. There’s zero risk: Our Level Guarantee allows you to switch to a different level or intensity type within the same distance if you discover that the plan you’ve selected is too hard or too easy. Review our Level Comparison Chart to see what level is right for you.
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80/20 Endurance is the creation of Matt Fitzgerald and David Warden. Based on the breakthrough books 80/20 Running and 80/20 Triathlon, runners, triathletes, and other endurance athletes improve the most when they consistently do 80 percent of their training at low intensity and the other 20 percent high intensity. The typical endurance athlete spends only 50-70 percent their total training time at low intensity. The solution? An 80/20 training plan that ensures the optimal intensity balance.