Distance Running Guides

Understanding your aerobic system is fundamental to distance running success. This is the engine that powers every run from 5K to ultra-marathons.

You can train perfectly for eighteen weeks and still fall apart at mile 20. Not because your aerobic base failed, but because you ran out of fuel. Nutrition...

The single biggest threat to your running is not a slow VO₂max or a bad plan - it is missing six weeks with an injury. Most running injuries are not caused...

Smart progression prevents injury and maximizes gains. Periodization organizes your training into phases that build on each other toward a peak performance.

Recovery isn't just about rest days - it's when your body actually gets faster. Understanding recovery is key to long-term improvement and staying...

Strength training is the most under-used tool in distance running. It is not about getting bigger, and it will not make you slow. Done correctly, it improves...

Understanding these core principles will help you evaluate any training plan and understand why certain approaches work. These principles are grounded in...

Every training plan includes different types of runs, each serving a specific purpose. Understanding what each workout does helps you train smarter.

The most important principle in training: make your easy days easy and your hard days hard. Violating this rule is the #1 mistake runners make.

Training by heart rate helps you run at the right intensity for each workout. Understanding heart rate zones ensures your easy runs are actually easy and...

Your lactate threshold is the single most important physiological marker for distance running performance. Understanding and training it is key to racing...

Training builds the engine. Race day is the one hour - or the three hours - in which you either use that engine well or waste it. Execution is a separate...

Two key determinants of running performance: how much oxygen you can use (VO2 max) and how efficiently you use it (running economy). Understanding both helps...

This plan peaks at 50 miles in its biggest week. That is a real 10K build, and it sits at the top of the intermediate range rather than the middle of it...

This is the sibling of 12-Week 5K Training Plan (Advanced Level), moved up a distance. The volume is higher, the long run is longer, and - the key structural...

If you have not raced a 5K yet, start with the beginner 5K plan. If you are already running 25-30 miles per week with tempo and interval work in your legs...

This plan peaks at 38 miles in its biggest week. That is a real 5K build, and it sits at the top of the intermediate range rather than the middle of it...

This is not the intermediate plan with bigger numbers. It assumes you already have the aerobic base, and it spends that base on two quality sessions per week...

This is the entry point to the training library. If you already run 20-25 miles per week and have raced before, skip this and use the intermediate 5K plan.

This plan peaks at 61 miles in its biggest week. That is a real half marathon build, and it sits at the top of the intermediate range rather than the middle...

This is the advanced sibling of 16-Week Half Marathon Training Plan (Intermediate Level). It is not that plan with bigger numbers. The difference is...

This is the sibling plan to the 16-week intermediate half marathon plan. If you already train 30-35 miles per week and have raced this distance, go there...

This plan peaks at 68 miles in its biggest week. That is a real marathon build, and it sits at the top of the intermediate range rather than the middle of...

This is the advanced sibling of 18-Week Marathon Training Plan (Intermediate Level). The difference is not that the numbers are bigger. The difference is...

Say it out loud. Write it on your hand on race morning if you have to. Every bad first-marathon story starts the same way: a beginner picks a time goal from...

Copy this page into a new file for each training week (or print it), fill it in, and keep the old ones.

Now that you understand the fundamentals and two major training systems (Jack Daniels and McMillan), let's compare them and help you choose the right...

One of the most respected and scientifically-grounded training systems in distance running. If you understand the fundamentals, Jack Daniels' system provides...

A comprehensive, race-focused training system developed by coach Greg McMillan. Known for the popular McMillan Running Calculator and practical, accessible...

The questions runners actually ask, answered directly. Each one starts with a short answer, then the nuance. Where the evidence supports a position, this...

Every term in this guide, defined in plain language. If a concept has a full page, the entry links to it. Terms are grouped alphabetically - use your...

Everything you need to turn one race result into a full set of training paces, without leaving this guide.

Weekly Training Time Distribution: Zone 1-2 (Easy): ████████████████ 80% Zone 3 (Moderate): █ 5% (mostly race pace only) Zone 4-5 (Hard): ███ 15%

MACROCYCLE (6-12 Months) │ ├─ Phase 1: BASE (12-16 weeks) │ │ Volume: ▲▲▲ Increasing │ │ Intensity: ▼▼ Low │ └─ Goal: Build aerobic foundation │ ├─ Phase 2...

This guide is written by Patrick Wiloak. I ran the 2013 Boston Marathon in 2:55:13 at age 20. I also ran a 4:40 mile, a 16:40 5K, and a 1:23 half marathon...