Fartlek Nike Run Club: How to Run Speed Play Workouts in the App

By Miles Sinclair

Updated November 2026

If you want to add speed play to your training without building a spreadsheet of splits, fartlek Nike Run Club sessions are one of the simplest ways to do it. Fartlek means “speed play” in Swedish, and it describes a run where you alternate between faster and easier efforts, with the timing and intensity guided by feel rather than a rigid plan. This guide walks through how to set up and run fartlek workouts in the app, how to pick effort levels that actually work, and how to avoid the mistakes that turn a useful session into an exhausting one.

What Fartlek Is and Why It Works

Fartlek is a form of continuous running with built-in changes of pace. Unlike a track interval session, where you hit exact distances at exact paces with set rest periods, fartlek lets you vary the speed and duration of each effort. You might sprint to the next lamppost, jog for two minutes, then push at a strong tempo up a hill. That flexibility makes it easier to stick with, and it trains your body to shift gears, a skill that matters in races where the pace is never perfectly even.

Shopping for one? See our guide: Fartlek Run vs Interval Training: Which Should You Choose?.

For most recreational runners, fartlek sits between an easy run and a structured interval workout. It raises your heart rate enough to build aerobic power and running economy, but it does not demand the precise pacing discipline of a track session. If you are still learning how different workouts fit together, it helps to compare the options. The article Tempo Run vs Interval Run vs Fartlek: Which Should You Choose? lays out how each one stresses your system differently.

How Fartlek Works Inside Nike Run Club

Nike Run Club does not have a single button labeled “fartlek,” but the app supports the workout in a few ways. The most common approach is to use the run tracking and audio cues to guide your own structure, or to follow a guided run that includes speed segments. Either way, the app records your pace, distance, and time, so you can review how your efforts actually turned out afterward.

Coaches who use the app for speed work often recommend a simple setup: start the run, let the app track your distance, and use your own timing or landmarks to decide when to change pace. You can also set a loose plan before you leave, such as a 10-minute warm-up, then alternating blocks of hard and easy running for 30 to 40 minutes, and a cooldown. The app will keep the data, which makes it easy to compare sessions over several weeks.

Menu labels and guided options can change as the app is updated, so check the current workout library and run settings before you head out. The core idea stays the same regardless of the interface: you control the surges and recoveries, and the app records what you did.

Step-by-Step: Running a Fartlek Session

Step 1: Warm Up for 10 to 15 Minutes

Begin with easy running at a conversational pace. Add a few 20-second strides near the end of the warm-up to prime your legs for faster running. Skipping this step is one of the most common reasons people feel flat or strained during the first hard effort.

Step 2: Pick Your Effort Levels

Fartlek works on three effort zones: easy, moderate, and hard. Use a simple scale:

• Easy: conversational pace, you could talk in full sentences.
• Moderate: steady and comfortable but noticeably working, short phrases only.
• Hard: strong effort, two or three words at a time, around 85 to 90 percent of your maximum effort.

Step 3: Choose Your Surge Lengths

Vary the duration of your hard efforts. A balanced session might include a mix of short bursts, medium pushes, and a few longer efforts. Examples include 30-second to 1-minute sprints, 2- to 3-minute tempo pushes, and occasional 4- to 5-minute efforts on hills or flats. Recovery between surges should be easy running, typically equal to or somewhat longer than the hard effort.

Step 4: Sample Session Structure

Here is one way to structure a 40-minute session:

1. 10-minute easy warm-up
2. Two sets of: 1 minute hard, 2 minutes easy
3. Two sets of: 2 minutes moderate-to-hard, 2 minutes easy
4. One set of: 3 minutes hard, 3 minutes easy
5. Four sets of: 30 seconds fast, 90 seconds easy
6. 10-minute easy cooldown

Adjust the numbers to fit your fitness. Beginners can drop one or two sets and keep the hard efforts shorter. More experienced runners can add a few minutes of total hard running or shorten recoveries.

Step 5: Cool Down and Review

Finish with 5 to 10 minutes of easy jogging or walking. Afterward, open the run in the app and look at your pace, heart rate if you have it recorded, and how your effort felt. Over time you can use this data to refine your effort levels and recovery periods.

Choosing the Right Fartlek Structure for Your Goals

Your goal should shape how you build the session. For a 5K, you might emphasize moderate-to-hard efforts of 2 to 4 minutes with short recoveries. For a 10K, longer tempo-style surges and steadier recoveries make more sense. If you are building a base, keep the hard efforts short and infrequent. The article Fartlek Workout for 5K vs Tempo Runs: Which Should You Choose? goes deeper on matching the session to race distance.

Frequency matters too. Most runners do well with one fartlek session per week, placed at least a day away from a long run and another hard workout. Two sessions can work for experienced athletes, but beginners should start with one and monitor how their legs respond.

Common Mistakes to Avoid

• Going too hard on every surge. Fartlek should feel controlled. If every effort is a sprint, you will run out of gas by the middle of the session.
• Skipping the warm-up. Cold legs and fast running are a poor combination.
• Recovering too quickly or too slowly. Easy recoveries should let you partly recover, but jogging to a standstill defeats the point of the session.
• Ignoring the data. The app records everything. Reviewing it helps you see whether you are pacing sensibly.
• Doing fartlek too often. Speed work is demanding. Two or three hard sessions per week is usually plenty for most runners.

Tips for Getting More From Each Session

Run on varied terrain when you can. Gentle hills make natural surges, and the uphill efforts build strength without requiring fast flat pacing. Choose a route with landmarks such as lampposts, trees, or intersections so you can use them as cues instead of watching your watch constantly. Keep a simple log of what you did, how it felt, and how the next day’s easy run went. Patterns emerge quickly, and they will tell you whether to push harder or back off.

If you are comparing fartlek to other speed options, the article Fartlek Training vs HIIT (2026): Which Is Better for Speed Gains? explains how the two differ in intensity and recovery. For a broader view of how fartlek fits into the fitness picture, What Components of Fitness Does Fartlek Training Improve? (2026 Guide) is a useful companion read.

Recommended gear

A few basic items make fartlek sessions easier to run well. A reliable running watch or phone with GPS helps you track pace and distance, though you can also use the app on your phone alone. A chest strap heart rate monitor gives more accurate readings during fast efforts than wrist-based sensors, which can lag during quick changes in pace.

• Running watch with GPS, such as a Garmin Forerunner, for tracking splits and surge timing on the run. View on Amazon
• Chest strap heart rate monitor, such as a Polar H10, for accurate heart rate data during quick surges. View on Amazon
• Lightweight running shoes with a responsive midsole, which help you handle the change between hard and easy running. View on Amazon

FAQ

How often should I do a fartlek workout?

Most runners benefit from one fartlek session per week. Experienced runners may add a second session if recovery is good, but beginners should start with one and allow at least a day of easy running around it.

Do I need to use the Nike Run Club app to do fartlek?

No. Fartlek is a training method, not an app feature. The app is simply a convenient way to track distance, pace, and time while you do your own structured speed play.

How long should a fartlek run be?

A typical session runs 30 to 50 minutes total, including warm-up and cooldown. The hard portion usually makes up 15 to 25 minutes of that time, depending on your fitness and goals.

Is fartlek good for beginners?

It can be, as long as the efforts are kept moderate and recoveries are generous. Beginners should keep hard surges short, avoid all-out sprinting, and gradually build the total amount of fast running over several weeks.

What is the difference between fartlek and intervals?

Intervals use set distances, set paces, and set rest periods. Fartlek is less structured, letting you vary the speed and duration of efforts based on feel and terrain. Both build speed, but fartlek is more flexible.

Can fartlek help me run a faster 5K?

Yes. Fartlek builds aerobic capacity, running economy, and the ability to change pace, all of which contribute to a faster 5K. Pair it with regular easy running and at least one other quality session for the best results.

Should I see a professional before starting speed work?

If you have a heart condition, a history of injury, or any medical concern, consult a doctor or qualified coach before beginning high-intensity training. Stop and seek help if you experience chest pain, dizziness, or unusual shortness of breath.

How do I know if I am running fartlek too hard?

If you cannot recover between surges, if your easy running starts to feel hard, or if you dread the next session, you are likely overdoing it. Back off the intensity or add more recovery time and reassess the following week.

Conclusion

Fartlek gives you a flexible, effective way to build speed without the rigid structure of track intervals. Use a clear warm-up, controlled hard efforts, and generous recoveries, and let the app’s data show you how your training is progressing. Start with one session per week, keep the efforts honest but not reckless, and build gradually. Over a few months, the changes in pace and endurance will show up on race day.

About Miles Sinclair

Miles Sinclair is part of our editorial team and reviews and edits our speed & interval running guides, checking product details against manufacturer specifications and owner feedback.