Am I running my easy runs too fast?
The most common self-coaching mistake, checked in ten seconds: a race you’ve run, the pace you cruise at — and an honest verdict.
Enter your usual easy pace above to get the verdict. Your easy window at this fitness: 6:01–6:41/km
The range comes from Daniels’ VDOT method — the same math behind the training pace calculator and the free training plans, where every easy day already carries this window.
Common questions
How do I know if my easy runs are too fast?
Two tests. The talk test: if you cannot speak full sentences, it is too fast. The math test: derive your easy range from a race you have actually run (this checker does that) and compare. Most self-coached runners fail both and run easy days 30–60 seconds per kilometer too fast.
Why should easy runs be slow?
Easy days build your aerobic engine — mitochondria, capillaries, fat metabolism — and that adaptation happens at a conversational effort, around 72% of VO2max. Running them faster does not build more; it just adds fatigue that steals quality from your hard days.
What happens if I keep running easy runs too fast?
The classic pattern: every run becomes medium-hard, hard days stop being genuinely hard, progress plateaus, and overuse injuries show up. Slowing easy days down is the single most common fix in self-coached running.
Can easy runs be too slow?
Practically, no. Slower than your easy window still delivers the aerobic benefit. If a pace feels effortless you can drift toward the faster edge of your range, but there is no adaptation you lose by being conservative.
