Quick Answer
FTP (Functional Threshold Power) is the highest average power in watts you can sustain for approximately one hour. It is the foundational metric for power-based cycling training — all your training zones are calculated as percentages of your FTP. To test it: ride all-out for 20 minutes, multiply average power by 0.95. To improve it: sweet spot intervals, threshold work, VO2 max sessions, and a strong base of Zone 2 riding. Retest every 6–8 weeks.
What Is FTP?
FTP stands for Functional Threshold Power. It was developed by Dr Andrew Coggan — exercise physiologist and co-author of Training and Racing with a Power Meter — as a practical way for athletes to estimate their lactate threshold without a laboratory test. The concept was designed to be functional: measurable with a power meter and applicable to real training without specialist equipment.
Physiologically, FTP represents the power output at which your body is at approximately its maximal lactate steady state — the highest intensity where lactate production and lactate clearance are in rough balance. Below your FTP, you can sustain effort for extended periods. Above it, lactate accumulates faster than it clears, and fatigue accelerates. In simple terms, FTP is the line between sustainable and unsustainable effort over time.
The word “functional” is important: FTP is an estimation, not an exact physiological measurement. The 0.95 multiplier on a 20-minute test is a practical rule of thumb, not a precise conversion. Individual physiology varies — some riders with very high anaerobic capacity will overestimate their FTP from a 20-minute test; others will underestimate it. What matters is that your FTP number is consistent across tests and accurately calibrates your training zones for you.
Why FTP Matters for Training
FTP is the anchor for all power-based training because it allows you to prescribe and execute workouts at precise, repeatable intensities. Without knowing your FTP, “ride hard” and “ride easy” are subjective. With it, every workout can be defined in terms that your body will actually experience consistently, regardless of day-to-day variation in how you feel.
Every training platform — Zwift, TrainerRoad, Wahoo SYSTM, Rouvy — uses your FTP to calibrate workout intensities. When Zwift prescribes intervals at 120% FTP, it is targeting a specific physiological zone (VO2 max effort) that will be the same experience for a 200-watt FTP rider as for a 350-watt FTP rider, despite the different absolute wattages. This is what makes power-based training uniquely precise compared to heart rate or RPE alone.
FTP also enables meaningful tracking of fitness progress. A rider who improves from 250 to 275 watts FTP over 12 weeks of training has increased their threshold by 10% — a clear, measurable gain. For triathletes, FTP is especially critical because it determines bike leg pacing targets and the Intensity Factor (IF) — the ratio of normalised power to FTP — which directly predicts how much energy you will have for the run. A well-paced Ironman bike leg typically targets around 70–75% FTP; for half Ironman, 80–85%.
How to Test Your FTP
The 20-Minute Test (Most Common)
This is the standard field test developed by Hunter Allen (co-author with Coggan). The protocol requires an all-out 5-minute effort in the warm-up to deplete your anaerobic reserve before the test, so the 20-minute effort better represents your aerobic threshold rather than a mix of aerobic and anaerobic capacity.
Protocol: 10–15 min easy warm-up → 3 × 1 min fast-cadence efforts (100–120 rpm) with 1 min easy between → 5 min all-out effort (as hard as possible) → 10 min easy recovery → 20 min maximal effort (as hard and as even as possible) → cool down. Record your average power for the 20 minutes. Multiply by 0.95 to estimate FTP.
Pacing the 20-minute effort: The most common mistake is starting too hard and fading badly in the final 5 minutes. Target an even or slightly negative split — a common strategy is to hold back for the first 5 minutes, building to your maximum sustainable output by minute 8–10 and holding it to the end. If the last 3 minutes are significantly slower than the first 3, you started too fast and your result will underestimate your true FTP.
The Ramp Test
The ramp test has become popular on platforms like TrainerRoad and Zwift because it is less psychologically demanding than a 20-minute all-out effort. Starting from a low power, the test increases wattage by a set increment every minute until the rider can no longer continue. FTP is estimated as 75% of the highest 1-minute power achieved. The ramp test takes roughly 15–25 minutes and requires less pacing skill. However, riders with very high anaerobic capacity may slightly overestimate FTP from this test, while those with lower anaerobic capacity may slightly underestimate it.
When to Test
Retest every 6–8 weeks to capture fitness changes and recalibrate your zones. Always test on a day when you are well-rested (not immediately after a hard block) and use the same protocol each time for consistent comparison. Avoid testing in hot weather, at altitude, or when fatigued — these variables will artificially suppress your result. For the full testing protocol and common errors, see our FTP test cycling guide.
Cycling Power Zones Based on FTP
The Coggan 7-zone system is the most widely used framework for translating FTP into training zones:
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| Zone | Name | % of FTP | How It Feels | Primary Adaptation |
|---|---|---|---|---|
| 1 | Active Recovery | <55% | Very easy, no real effort | Recovery, blood flow |
| 2 | Endurance | 56–75% | Comfortable, conversational | Aerobic base, fat oxidation |
| 3 | Tempo | 76–90% | Moderately hard, breathing elevated | Aerobic fitness, efficiency |
| 4 | Lactate Threshold | 91–105% | Hard, difficult to speak | FTP improvement |
| 4 (Sweet Spot) | Sweet Spot | 88–93% | Comfortably hard | High FTP bang-for-buck |
| 5 | VO2 Max | 106–120% | Very hard, gasping | Aerobic capacity ceiling |
| 6 | Anaerobic | 121–150% | Maximal short efforts | Anaerobic power, race surges |
| 7 | Neuromuscular | >150% (sprint) | All-out, seconds only | Sprint power, neuromuscular |
Most structured training programmes use an 80/20 split: approximately 80% of riding volume in Zone 2 (aerobic base) and 20% in Zones 4–5 (quality work). This ratio produces the best long-term fitness development while controlling fatigue accumulation. For how to structure your training week around these zones, see our cycling training week structure guide and our guide on does Zone 2 training improve VO2 max.
What Is a Good FTP?
FTP in absolute watts is heavily influenced by body weight, so the standard comparison metric is power-to-weight ratio (FTP divided by bodyweight in kg, expressed as W/kg).
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| Category | Men (W/kg) | Women (W/kg) | Context |
|---|---|---|---|
| Beginner | 1.5–2.0 | 1.3–1.7 | New to structured riding |
| Recreational | 2.0–2.5 | 1.7–2.2 | Regular cyclist, no racing |
| Enthusiast | 2.5–3.5 | 2.2–3.0 | Club rides, sportives, gran fondos |
| Competitive amateur | 3.5–4.5 | 3.0–4.0 | Category racing, age-group podiums |
| Elite amateur | 4.5–5.5 | 4.0–5.0 | National-level amateur, fast masters |
| Professional | 5.5–6.5+ | 5.0–6.0+ | WorldTour and continental pro teams |
More important than comparing against benchmarks is tracking your own improvement. A consistent 5–10% FTP gain over a structured training block represents meaningful progress at any level. For context on how your numbers compare by age group, see our average FTP by age guide and our detailed breakdown of factors that influence FTP improvement.
How to Improve Your FTP
Sweet spot training (88–93% FTP). Sweet spot work sits just below lactate threshold and delivers the highest FTP gain per unit of fatigue incurred — which is why it is the cornerstone of most structured training plans. Key sessions: 2–4 × 15–20 minutes at 88–93% FTP with 5 minutes recovery. Beginners can start with 3 × 10 minutes. Progress by adding time (10 → 15 → 20 min) before adding sets.
Threshold intervals (95–105% FTP). These push the upper limit of your sustainable power, directly training the body to operate closer to lactate threshold for longer. Key sessions: 4 × 8–10 minutes at 95–100% FTP with 5 minutes recovery. Progress to 3 × 20 minutes as fitness develops. For structured threshold workout options, see our most effective cycling intervals guide and our cycling VO2 max workouts.
VO2 max work (106–120% FTP). Short, very hard efforts develop the ceiling of your aerobic capacity, which creates the headroom for FTP to rise. Key sessions: 5–8 × 3–5 minutes at 110–120% FTP with equal recovery. VO2 max work should be limited to once per week and requires 48 hours of easy riding before and after. For a progression guide, see how to increase your FTP by 50 watts.
Zone 2 aerobic base volume. The foundation of all threshold improvement is a high volume of aerobic base riding. Consistent Zone 2 riding (56–75% FTP) increases mitochondrial density, fat oxidation efficiency, and cardiovascular capacity — all of which support higher FTP. Most recreational cyclists underinvest in Zone 2 and overtrain in the “moderate” zone (70–80% FTP) that is too hard for recovery and too easy for meaningful adaptation. See our complete cycling fitness plan guide for how to structure base and quality work across a training season.
Recovery and lifestyle. FTP responds to training stress, but adaptation happens during recovery. Sleep quality and quantity, nutrition (adequate carbohydrate for fuelling training, adequate protein for recovery), and stress management all directly affect FTP trajectory. Testing FTP when fatigued produces a number that misrepresents your actual fitness level and miscalibrates your zones.
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FAQ: What FTP Means in Cycling
What does FTP mean in cycling?
Functional Threshold Power — the highest average power in watts you can sustain for approximately one hour. Developed by Dr Andrew Coggan, it is the anchor metric for all power-based cycling training zones, workout prescription, and performance benchmarking.
What is a good FTP for a cyclist?
FTP is best measured as watts per kilogram (W/kg). Recreational cyclists typically sit at 2.0–2.5 W/kg; enthusiasts at 2.5–3.5 W/kg; competitive amateurs at 3.5–4.5 W/kg. More valuable than benchmarking is tracking your own improvement over training blocks.
How do you test your FTP?
The 20-minute test: after a structured warm-up including a 5-minute all-out effort, ride as hard as possible for 20 minutes. Multiply average power by 0.95 for your FTP estimate. Alternatively use a ramp test (multiply peak 1-minute power by 0.75). Retest every 6–8 weeks.
What are cycling power zones based on FTP?
The Coggan 7-zone system: Zone 1 Active Recovery (<55%), Zone 2 Endurance (56–75%), Zone 3 Tempo (76–90%), Zone 4 Threshold / Sweet Spot (88–105%), Zone 5 VO2 Max (106–120%), Zone 6 Anaerobic (121–150%), Zone 7 Neuromuscular (sprint). Most training volume should be in Zone 2, with targeted quality work in Zones 4–5.
How can I improve my FTP?
Sweet spot intervals (88–93% FTP), threshold work (95–105%), VO2 max sessions (106–120%), and a strong volume of Zone 2 base riding. Consistency, progressive overload, adequate recovery, and retesting every 6–8 weeks are the keys to ongoing FTP improvement.
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