Training · Running
Easy running, and why almost everyone does it too fast
The single most common structural error in amateur running is that the easy days are not easy and the hard days are therefore not hard. Everything ends up in the middle — tiring enough to accumulate fatigue, not hard enough to produce much adaptation. This is what easy running is for, and how to tell whether you are actually doing it.
The widely used description of endurance training structure is that the large majority of the running is done at low intensity and a small minority at high intensity, with very little in between. It is often quoted as an eighty-twenty split. The exact ratio is argued over and varies with the athlete and the sport, but the shape — mostly easy, occasionally hard, rarely medium — is the point rather than the numbers.
The reasoning is not mysterious. Low-intensity running can be done in volume without accumulating the kind of fatigue that requires days to clear, so it is how total training load is built. High-intensity work produces adaptations that easy running does not, but it costs recovery, so there is a limit to how much of it fits in a week. Medium-intensity running is the worst of both: too taxing to do in volume, not stimulating enough to be worth the cost.
The talk test is the check that needs no equipment and is difficult to fool. At an easy effort you can speak a complete sentence without having to break it for breath. Not one word, not three words at a time — a sentence. If you cannot, the run is not easy, whatever the watch says.
Heart rate is the other common check, and it is more precise in principle and less reliable in practice for a beginner. The percentage-of-maximum formulas in general circulation are population estimates with a wide spread, and the maximum they are calculated from is usually itself an estimate from age. Two estimates stacked on each other is a shaky foundation for a daily decision, and the talk test is measuring the thing you actually care about.
The obstacle is not physical. Running at a genuinely easy effort feels like not-quite-running, particularly for anybody reasonably fit at another sport, and it looks slow on a watch and slower still next to other people. A large proportion of runners find this uncomfortable enough that they quietly speed up every time their attention wanders.
The practical answers are unglamorous. Run easy runs with somebody slower than you and talk to them, which enforces the test automatically. Run without looking at pace at all. Or run a route with a hill early on, which forces the effort down before habit takes over. What does not work is intending to go slower.
Questions this guide answers
Listed so you can tell at a glance whether this is the page you wanted. HobbyHQ keeps one guide per question family rather than a page per phrasing.
- what is easy running
- how slow should easy runs be
- why do coaches say run slower
- what is the 80 20 rule in running
- am I running my easy runs too fast
- what pace should I do my easy runs at
Part of Running. Last reviewed 2026-08-30.