FTP Booster Plan
*Update June 2026
The Ribble FTP Booster Plan is a structured four week FTP training plan built to raise your Functional Threshold Power through a blend of threshold work, sweet spot training, VO2 max intervals and progressive endurance.
If you want a focused, time-efficient way to ride faster for longer, this is the plan to follow, and every session is delivered through TrainingPeaks so it syncs straight to your trainer or head unit.
Plan Overview
This is a four week training plan designed to raise your Functional Threshold Power (FTP) through a combination of threshold work, sweet spot training, VO2 max intervals and progressive endurance volume. This structured approach targets the specific physiological adaptations needed to sustain higher power outputs for longer.
What Is FTP?
FTP, or Functional Threshold Power, is the highest power you can hold for roughly an hour, measured in watts. It sits at the point where your body produces and clears lactate at about the same rate, often called your lactate threshold. In simple terms, it is the line between an effort you can sustain and one that quickly buries you.
FTP matters because it underpins almost everything in your riding. The higher your FTP, the more work you can do aerobically, which means more speed on the flat, more power up the climbs and more endurance over a long day in the saddle. It is also the number that sets your training zones, so improving it makes every other session more effective. Raising your FTP is the single most useful thing most cyclists can do to get faster, whether you ride a road bike, a gravel bike or a aero bike.
How an FTP Booster Plan Develops Your Fitness
Your FTP is a reflection of your aerobic fitness, so FTP development comes from training that strengthens your aerobic engine and your muscular endurance. This plan does that in stages, building a foundation first and then stacking more specific, higher-intensity work on top, so each adaptation has a base to sit on.
The training blend
Rather than relying on one type of session, the plan blends four complementary kinds of training, each targeting a different physiological lever. Combining them is what makes the four weeks so effective:
- Endurance: steady aerobic riding that builds your base, improves fat metabolism and lets you absorb the harder sessions.
- Sweet spot: just below threshold, this gives a high training return for the time invested and builds muscular endurance fast.
- Threshold and over-unders: efforts at and around FTP that train your body to clear lactate efficiently and hold power for longer.
- VO2 max: short, intense intervals that lift your aerobic ceiling and pull your FTP up behind it.
Blending these zones across the four weeks drives broader adaptation than any single session could on its own, which is exactly why a structured plan beats riding hard and hoping.
What you need to know
Who is the plan for? - This plan suits motivated cyclists seeking a focused, time-efficient FTP boost*
How often will I ride? - 3 to 5 rides per week depending on your schedule and recovery capacity, with optional Sunday recovery sessions to promote active recovery
What is an FTP test? - An FTP test estimates the maximum power you can hold for about an hour, usually from a 20-minute effort, so you can set training zones and track progress.
Do I need to do an FTP test? - The plan concludes with a proper FTP test, either the traditional 20-minute protocol or a ramp test depending on your preference.
Do you need a power meter? - Yes, If you are still choosing one, browse our power meters to find a setup that fits your bike.
Training Zones - All power targets are personalised and prescribed as percentages of your current FTP across zones 1 to 5.
Do you need a TrainingPeaks account - Yes, but we have a free 4 week trial for you to benefit from
How do I get the trial - Use the code Ribble26
The Four Week Plan
Week One - Foundation Phase
Establish your aerobic base with endurance rides and introductory threshold work. This week prepares your body for the higher training loads ahead, allowing your aerobic system to adapt while building muscular endurance without excessive fatigue.
Week Two - Threshold Development
Structured over-under intervals take center stage, training your body to clear lactate more efficiently while maintaining sustained power just above and below threshold. These sessions develop your ability to handle fluctuating efforts and recover quickly during hard riding.
Week Three - Peak Stimulus
The hardest week of the plan features VO2 max intervals to push your aerobic ceiling higher, combined with extended threshold and sweet spot work to maximize physiological adaptation. This accumulated training stress drives the fitness gains you're seeking.
Week Four - Recovery and Testing
Reduce training volume to allow your body to absorb the previous weeks' work and recover fresher and stronger. The week concludes with a structured FTP test to measure your progress and celebrate your improvements.
What to expect from a workout
Training Indoors
Workouts sync to Zwift, Rouvy, or TrainingPeaks Virtual, controlling your smart trainer automatically. Target power zones display on screen with the trainer adjusting resistance to match. Intervals are built in: when it's time to go hard, resistance ramps up. Recovery periods drop resistance automatically. No manual adjustments needed. Simply pedal smoothly and hit the targets while the platform manages everything else.
Training Outdoors
Sync workouts to your Garmin or Wahoo before riding. Structured sessions appear on screen with power targets, durations, and rest periods clearly marked. Visual and audio alerts signal interval starts and finishes. Choose routes allowing uninterrupted efforts: quiet roads, steady climbs, or flat sections. Your device tracks and uploads automatically to TrainingPeaks.
Tips to Get the Most From Your FTP Booster Plan
The plan does the structuring for you, but a few habits make the difference between a small bump and a genuine breakthrough:
- Stay consistent. Turning up for the steady sessions matters as much as nailing the hard ones; adaptation comes from the whole block, not one heroic ride.
- Match the volume to your life. Three quality rides you actually complete beat five you cannot recover from.
- Fuel the work. Carbohydrate before and during the harder sessions lets you hit the targets and recover for the next one.
- Prioritise recovery and sleep. The gains are made while you rest, so protect your easy days and your sleep.
- Re-test at the end. Finishing with a proper FTP test is what turns four weeks of effort into a number you can build on.
Frequently Asked Questions
How much can I increase my FTP in four weeks?
It varies with your starting fitness and consistency, but newer and returning riders often see a meaningful jump, while experienced cyclists can expect smaller, hard-won gains. The structured blend of threshold, sweet spot and VO2 max work is designed to give you the best realistic improvement in the time available.
What is the difference between FTP and threshold?
They describe nearly the same thing. Lactate threshold is the physiological point where lactate starts to accumulate faster than you can clear it, and FTP is the practical, power-based estimate of that point that you can actually train and test with.
Is this plan suitable for beginners?
It suits motivated riders who already ride regularly and are comfortable training to power. If you are brand new to structured training, you can still follow it, but build a little base fitness first so the harder weeks feel productive rather than overwhelming.
How do I get the free TrainingPeaks trial?
Use the code Ribble26 to unlock a free four week TrainingPeaks trial, which covers the full length of the plan.
Ready to Raise Your FTP?
Follow the structure, hit your targets and test your progress at the end. Start The Plan.
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