Quick Summary
Cycling training zones by FTP: Zone 1 — below 55% FTP (Active Recovery). Zone 2 — 56–75% FTP (Endurance, most important for base fitness). Zone 3 — 76–90% FTP (Tempo). Zone 4 — 91–105% FTP (Threshold). Zone 5 — 106–120% FTP (VO2 Max). Zone 6 — above 121% FTP (Anaerobic). To find FTP: ride a 20-minute all-out effort and multiply average power by 0.95. For Indian conditions, Zone 2 training is best done in early morning hours to avoid heat stress. Power output drops 5-10% in temperatures above 35°C — adjust zones accordingly.
Last updated: April 2026 · Next update: August 2026
What Are Cycling Training Zones?
Training zones are intensity ranges defined as percentages of your Functional Threshold Power (FTP) — the maximum power you can sustain for one hour. Each zone targets different physiological systems and produces different training adaptations. Training by zones replaces vague effort descriptions ("ride hard," "ride easy") with precise, measurable targets.
You can measure zones using a power meter (most accurate) or heart rate monitor (less accurate but widely available). For power meter options, see our power meters guide.
What Are the 6 Training Zones?
| Zone | Name | % of FTP (Power) | Heart Rate Equivalent | Perceived Effort | What It Trains | Duration |
|---|---|---|---|---|---|---|
| Z1 | Active Recovery | Below 55% | Below 68% max HR | Very easy — conversational | Recovery between hard sessions | 30-60 min |
| Z2 | Endurance | 56–75% | 69–83% max HR | Easy — can talk in full sentences | Aerobic base, fat burning, foundation fitness | 1-5 hours |
| Z3 | Tempo | 76–90% | 84–94% max HR | Moderate — sentences become shorter | Muscular endurance, sustained effort | 20-60 min |
| Z4 | Threshold | 91–105% | 95–105% max HR | Hard — can speak only in phrases | Lactate threshold, time trial ability | 10-30 min |
| Z5 | VO2 Max | 106–120% | Above 106% max HR | Very hard — cannot speak | Aerobic capacity, short climbing power | 3-8 min intervals |
| Z6 | Anaerobic | Above 121% | N/A (too short for HR) | Maximum — all-out sprint effort | Sprint power, neuromuscular | 10-30 sec intervals |
The most important zone for most Indian cyclists is Zone 2. Zone 2 builds the aerobic base that everything else sits on. 70-80% of your weekly riding time should be in Zone 2. This feels deceptively easy — if you can talk in full sentences, you are in Zone 2. Most amateur cyclists ride too hard (Zone 3) on easy days and too easy (Zone 2-3) on hard days. Polarised training — mostly easy with some very hard — is the most effective approach.
How to Find Your FTP
FTP (Functional Threshold Power) is the foundation number all zones are calculated from. The standard test:
Step 1: Warm up for 20 minutes (easy spinning + a few hard efforts).
Step 2: Ride as hard as you can sustain for 20 minutes. Use a flat, uninterrupted road or indoor trainer.
Step 3: Record your average power for the 20 minutes.
Step 4: FTP = 20-minute average power × 0.95.
Example: 20-minute average power of 220 watts × 0.95 = FTP of 209 watts.
Now calculate your zones: Zone 2 = 56-75% of 209 = 117-157 watts. Zone 4 = 91-105% of 209 = 190-219 watts.
India-specific tip: Perform FTP tests in the early morning (before 7AM) to avoid heat affecting results. Power output drops 5-10% in temperatures above 35°C. If you test outdoors, use the same route and time of day each test for consistency. Indoor trainer testing eliminates weather variables entirely. See our smart trainers guide for indoor options.
How to Find Zones Without a Power Meter
If you ride with a heart rate monitor but no power meter, you can approximate zones using heart rate. First, find your maximum heart rate — the most reliable method is a dedicated max HR test (3 × 3-minute all-out hill efforts), not the "220 minus age" formula which is inaccurate for many individuals.
Heart rate zones are less precise than power zones because heart rate is affected by heat (higher in Indian summer), hydration, caffeine, fatigue, and day-to-day variability. In Indian heat above 35°C, heart rate runs 5-10 beats higher at the same power output — so your Zone 2 heart rate in May will be higher than in December.
For heart rate monitoring options, browse our cycling electronics collection.
How Should an Indian Cyclist Structure Weekly Training?
| Day | Session | Zone | India Timing |
|---|---|---|---|
| Monday | Rest or Z1 recovery spin (30 min) | Z1 | Any time |
| Tuesday | Intervals: 4-6 × 4min at Z4-Z5, recovery between | Z4-Z5 | Before 7AM or indoor trainer |
| Wednesday | Z2 endurance ride (60-90 min) | Z2 | Before 8AM |
| Thursday | Rest or Z1 recovery spin | Z1 | Any time |
| Friday | Z2 endurance ride with 2 × 10min Z3 efforts | Z2-Z3 | Before 7AM |
| Saturday | Long ride — Z2 endurance (2-4 hours) | Z2 | Start 5:30-6:00AM |
| Sunday | Group ride (typically Z2-Z3 with Z4-Z5 surges) | Mixed | Before 8AM |