Sweet Spot Training: Everything You Need to Know

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Simply put, Sweet Spot training is completing workouts that contain intervals at 88-94% of your Functional Threshold Power (FTP). This type of work achieves positive physiological adaptations because it is the optimal balance of difficulty (intensity) and amount (volume).

Sweet Spot training is one of the most effective and efficient ways for cyclists to improve. With the right structure and training plan, you can let Sweet Spot training take your cycling performance to the next level. 

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What is Sweet Spot Training?

Sweet Spot training is a series of workouts containing intervals that are near your Functional Threshold Power (FTP). It’s hard enough that it works but easy enough so you can do it several times in a week. Compared to training in other power zones, you can prompt more meaningful aerobic adaptations in less time. It is no accident that it’s called Sweet Spot. 

Training in different power zones means different things for your fitness. In general, the ultimate goal is to get faster by raising your FTP. Sweet spot training is specifically aimed at improving your ability to resist fatigue at reasonably high power over a long time. As a result, this will enhance your cycling performance across the board by raising your FTP. So whether you are completing your first century or a competitive age-group triathlete Sweet Spot training is a great option.

Sweet Spot Power Zone

The Sweet Spot zone is just below threshold and targets power between 88% and 94% of your FTP. This is a gray area between the Tempo and Threshold zones. Riding for an extended time in the Sweet Spot zone, exhausts muscle fibers without too much muscle damage.

Training in the Sweet Spot power zone is challenging but doable. A common misconception is that it should be easy to ride in the Sweet Spot power zone for a long time. This isn’t the case because the target power is relatively high. Sweet Spot training is hard, but the benefits are massive.

Who Should Use Sweet Spot Training?

We recommend Sweet Spot training to 99% of cyclists because it is the optimal way to apply progressive, systematic training stress. What makes the best option for most cyclists? The answer has to do with how much time you can commit to training. 

A properly structured training plan will include three progressive phases, Base, Build, and Speciality. Each phase seeks to improve fitness in specific ways, and they all build on one another. While the Build and Speciality are particular to the types of events you want to train for, the Base Phase is all about establishing a foundation of fitness. The bigger your base, the higher you can grow your FTP.

There are two ways to complete Base Phase training. The first way is to ride at low intensities, often referred to as zone 2. This traditional approach, because of the low intensity, requires a lot of volume. Traditional base training can require 10-20 hours per week. Unfortunately, most of us don’t have that much time to devote to training. The good news is that you can get the same benefits with Sweet Spot training in as little as 5 hours a week.

This is why we suggest Sweet Spot training for so many cyclists. Unless, you have upwards of 20 hours per week to ride slowly, at low intensity, Sweet Spot is a much better choice. It’s a win-win. You can get faster in less time. 

Sweet Spot training is useful for a variety of reasons. These types of workouts improve your fitness, both physically and mentally. They also have substantial practical value to you on the day of your big event. 


Most of us are limited on time with family and professional responsibilities that reduce our training time. The reason this is so limiting in the context of traditional base training is that the improvements you are chasing only come through a tremendous amount of volume. If a cyclist is training at these low intensities without high volume, then they are doing very little to build their aerobic capacity. Sweet Spot training solves this problem by increasing your fitness in less time.

Mental Preparation

Sweet Spot training will prepare you for the discomfort that happens when you are pushing your limits. Riding in the Sweet Spot zone is uncomfortable but manageable. This training will prepare you mentally for your events. 

By pushing yourself in training, you’ll be able to push through the discomfort when it really matters. If all of your training is at a comfortable pace, you won’t be prepared for when you have to dig deep to hang onto the group or make it through the technical section of the trail. 

Gran Fondos and Racing

Whether you’re completing your first century or racing a crit, Sweet Spot training is crucial. Aside from all the physical and mental benefits, these events will require you to put out high levels of power for a long time. During any race, Dirty Kanza, or a road race, so much time is spent at Sweet Spot. Through Sweet Spot training, you’ll be ready to ride at a high percentage of FTP and crush your goal event. 

How to Use Sweet Spot Training to Build Your Base Fitness

A good base is necessary for you to reach peak fitness. From professionals to someone just starting out, building base fitness is a key to a successful season. 

Why Base Training is Important

Much like a pyramid, our fitness is built in succession. The initial work serves as a foundation that will eventually support a higher peak. This is achieved through base training in which a cyclist raises their fitness level. During this phase, several transformations are happening on different levels.

As you focus your training on developing your aerobic capacity, you train your body to become more efficient at turning fuel into energy using oxygen. This transformation takes place within the mitochondria in your muscles. So, as you spend more time stressing your aerobic energy system, your body creates more mitochondria that are more efficient. The best news of all is that your mitochondria are involved in turning energy into speed at higher intensities as well as low intensities.

Building Your Base

Base fitness is synonymous with aerobic-base fitness. This type of fitness is achieved through specific training that spurs particular physiological adaptations and is the very base upon which all further training is built. The more base fitness you have, the higher you can build your FTP.

Sweet Spot training will actually change your body in ways that will make you a stronger endurance athlete. Throughout the Base Phase, you will increase the number of capillaries. That means more tiny blood vessels to deliver blood (oxygen & nutrients) to the muscles. You will also increase the strength of your mitochondria. Stronger mitochondria result in higher aerobic performance. You’ll also strengthen your heart, improve fat metabolism, and increase muscular endurance.

All of these adaptations blend to achieve a shared outcome. You get oxygen extraction at the muscle. The more O2 the muscle can utilize, the more work it can do aerobically. As a result, you can produce more power without going into the red, meaning a higher FTP. All of this makes you a faster cyclist. 

Sweet Spot Training Versus Traditional Zone 2 Training

The type of gains you can achieve through Traditional Base are useful to a limited number of athletes, such as Grand Tour riders and RAAM participants. These cyclists know that in this approach to training the gains come slowly since they depend on devoting a lot of time riding easily.

Traditional Base assumes you have almost unlimited time to ride at a slow pace. Whereas Sweet Spot Base assumes you have a limited schedule like most non-professional cyclists, which allows you to compensate for the lack of duration with an increase in intensity. 

In contrast to Traditional Base, Sweet Spot training is more all-inclusive and can get you more fit in less time. The workouts are substantially more varied, interesting, and challenging. Just two or three of these workouts each week can bring measurable and motivating fitness gains. 

Higher-volume riders who can train more frequently (4-6 times per week), can add in just enough of the long, slow, traditional riding to further their gains.

Sweet Spot Interval Structure and Progressions

TrainerRoad’s Sweet Spot Base Training gives you the right workout, at the correct time to make sure you are progressing the best way. You’ll start small. Over 12 weeks, you’ll proceed to longer sweet spot intervals. 

Sweet Spot Workout Structure

Every TrainerRoad workout begins with a warm-up. This prepares your body for the upcoming work. After the warm-up, you get a short period of rest before jumping in the first interval. 

Sweet Spot training workouts should have a good warm-up.

In this example, we are looking at Ericsson. It’s an hour-long Sweet Spot workout. Each interval is 8 minutes long. During that time, you’ll stay between 88-94% of FTP. That adds up to 32 minutes in the Sweet Spot training zone. After the interval, you’ll get a 4-minute rest. Over the hour, you’ll complete four sets. Finally, you’ll finish with a cool-down. 

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Ericsson is an example of a Sweet Spot training workout that spends 32 minutes in the sweet spot power zone.

Sweet Spot Training Progressions

Each training plan follows a specific series of progressions. That means you’ll start out with shorter Sweet Spot intervals that will help ensure that you can finish the workout while hitting your power targets. As you work through the Sweet Spot progressions, you’ll grow your fitness and FTP. Over time, those intervals will become longer, more intense, or both. Your total time in the Sweet Spot zone will increase. So you may start with a workout like Ericsson, but you’ll quickly progress. Let’s take a look at some examples. 

Carson is a Sweet Spot training workout with seven intervals in the sweet spot power zone.

Carson is a good example of the next progression. Carson is six, 5-7 minute intervals that are between 88-94% FTP. You’ll complete 36 minutes of Sweet Spot work. 

Eclipse is a Sweet Spot power zone training workout with 3, 20-minute intervals.

Eventually, you’ll work your way up to a workout like Eclipse. Here you’ll spend an hour in the Sweet Spot training zone with 20-minute intervals. 

How to Start Sweet Spot Training

Starting Sweet Spot training is easy. First, you’ll need the right equipment and the latest version of the TrainerRoad app. Next, you’ll want to build a custom training plan with Plan Builder. Plan Builder accounts for how much time you have to train, your experience, and goal event, then it creates a customized plan for you. Using Plan Builder is the best and quickest way to get started. 

You can also add the Sweet Spot Base phase to your calendar on your own. There are two blocks, each lasting six weeks. You’ll want to start with the first block. Additionally, you’ll need to choose between low, mid, and high volume, depending on how much you want to train each week. If you are new to indoor training, starting with a low-volume plan is a good idea. You can always adjust to a higher volume later. Just make sure to complete a Ramp Test to asses your FTP.

How to Make Sweet Spot Intervals Easier

Sweet Spot training is tough but doable. However, there are some things that you can do to make your Sweet Spot intervals a little bit easier. With the right nutrition and some equipment you have around the house, you’ll be ready to nail your workouts. 

Fuel with Carbs

Sweet Spot training burns a lot of sugar, so it’s a good idea to eat a carb-rich meal 3-4 hours before your workout. Even if you’re aiming to lose weight, you need to fuel the work. During the workout, you may need to eat some carbs, especially if it’s a long one. This will help you train your gut to handle carbs at intensity, which is helpful for race day. 

Drink Up

Aim for at least one bottle every hour and maybe more. You can even use a sports drink mix for carbs and electrolytes. Pro tip: add some ice to the bottle to help reduce your core temperature.

Keep Cool

By far, the easiest way to make your Sweet Spot training feel easier is to cool yourself with a good fan. Get at least one fan that moves a high volume of air and position it to cover the maximum amount of surface area on your body as possible. 

Listen to Music

The right song can have a significant effect on how hard the workout feels. Your favorite, up-tempo music can help you push through. We recommend using headphones that have an IPX7 rating or higher to keep out the sweat. 

Train with Your Friends

You can do your Sweet Spot workouts with TrainerRoad’s Group Workouts. You’ll be amazed how fast the time goes by with friends there to motivate and encourage you.

How to Fuel Your Sweet Spot Workouts

While some experienced athletes can do it fasted or low-carb, fueling with carbs will pay enormous dividends for your Sweet Spot training. There are plenty of ways that you can fuel your workouts. 

Before Workout

Ingesting some carbs beforehand is crucial for your performance. The goal is to ensure sufficient glycogen stores are in the liver and muscles for the work that you are going to do. Fortunately, you can make sure you are ready by eating a carb-rich meal about 3-4 hours before you get on the bike. Just remember that more complex carbs take longer to be absorbed. Whole grains and beans can take a couple of hours, while fruits can be eaten 20-40 minutes ahead of your Sweet Spot workout. 

During Workout

Eating during the ride is all about fueling the muscles for the work they are doing. Because of that, you are going to want simple carbohydrates. This includes items like sports drinks, chews, and gels. Eating during sweet spot training is an excellent way to experiment with nutrition strategies for your big event. 

After Workout

Afterward, you’ll want to replenish the glycogen that you have used during the workout. Ingesting some protein is a good idea too. This can be as simple as a recovery drink or a regular meal. Either way, you want to ensure that you are ready to go for your next Sweet Spot workout. 

Sweet Spot training is an effective and time-efficient way to train for the vast majority of cyclists. If you are ready to take your training to the next level, try building a customized plan with Plan Builder. 

For more cycling training knowledge, listen to Ask a Cycling Coach — the only podcast dedicated to making you a faster cyclist. New episodes are released weekly.

Getting Faster with TrainerRoad

Ready to get faster? Driven by science and data, TrainerRoad provides the training, planning, and analysis tools you need to become a faster cyclist with a focused and straightforward system. Create a custom training plan with Plan Builder, complete workouts indoors, outside, or with friends, and prove that your training is working with post-ride analysis tools. You can be confident that you will become a faster cyclist, and over 1,500 stories from TrainerRoad athletes prove it. Try TrainerRoad with a 30-day, money-back guarantee.

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