Question 1

What are running training zones?

Accepted Answer

Running training zones are 5 intensity ranges that divide your effort from very easy (fundamental endurance) to very hard (VO2max). They are based on a percentage of your VMA (Maximal Aerobic Speed) or heart rate. Each zone targets different physiological systems: fat oxidation, aerobic capacity, lactate threshold, and VO2max. Training in the right zones ensures balanced development and faster progress.

Question 2

Why should I train in different zones?

Accepted Answer

Training in different zones ensures balanced development of all energy systems. Easy running (zones 1–2) builds your aerobic base and promotes recovery, while harder sessions (zones 3–5) improve speed, lactate threshold, and race performance. The 80/20 rule — 80% easy, 20% hard — is backed by extensive research on elite endurance athletes (Seiler 2006). Training only at moderate intensity is less effective than a polarized approach.

Question 3

How do I know which zone I'm in during a run?

Accepted Answer

The most practical ways are: (1) GPS watch showing your current pace, compared to your zone pace ranges; (2) Rate of Perceived Exertion (RPE) — how hard it feels on a 1–10 scale; (3) Heart rate monitor, though HR responds slower than pace to intensity changes. For steady runs, pace is the most reliable indicator. For intervals, RPE works best since pace changes rapidly.

Question 4

What is the 80/20 rule in running?

Accepted Answer

The 80/20 rule means spending roughly 80% of your training time at low intensity (zones 1–2) and 20% at moderate-to-high intensity (zones 3–5). Research by Seiler (2006) and Esteve-Lanao (2007) showed that elite endurance athletes naturally gravitate toward this distribution, and it produces better results than training mostly at moderate intensity. Most recreational runners make the mistake of running too fast on easy days.

Question 5

How often should I do VO2max intervals?

Accepted Answer

Most runners benefit from 1–2 VO2max sessions per week during a build phase, with at least 48 hours of easy running between hard sessions. Billat (2001) showed that intervals at 100% VMA (e.g., 30/30s or 5 × 1000m) are highly effective for improving VO2max. More is not better — quality and recovery matter more than volume at high intensity.

Level	VMA (km/h)	Description
🛋️Sedentary	0 – 8	Little to no physical activity
🚶Beginner	8 – 10	Just starting to run regularly
🏃Jogger	10 – 12	Running a few times per week
💪Active Runner	12 – 14	Consistent runner, solid aerobic base
⚡Good Runner	14 – 15.5	Trains with structure, good endurance
🔥Athletic	15.5 – 17	Strong runner, competes in local races
🏅Competitive	17 – 18.5	Podium finisher in age group
🏆Elite	18.5 – 20	Regional/national competitions
🇫🇷National	20 – 21.5	National-level performance
👑World Class	> 21.5	International/Olympic caliber

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