You may have heard of the term Fartlek training in the running community.
Whilst there are many Fartlek training advantages and disadvantages, many runners agree that it’s a form of speed training that helps you become a faster runner.
Many runners enjoy Fartlek training because it offers an unstructured form of speed training, in that you don’t have to stick with a speed or distance when you do Fartlek training.
Unlike interval training or tempo running which have a regimented structure and intensity and distance, Fartlek training allows you to adjust the intensity and distance of the run based on how you feel on the day.
As such, Fartlek training is highly individualised and highly adaptable.
In this guide we’ll explore Fartlek training in more detail, including the benefits of Fartlek training and Fartlek training examples, as well as 11 Fartlek training advantages and disadvantages.
What is Fartlek training?
‘Fartlek’ is a Swedish term for ‘speed play’ and is essentially a blend of distance running and interval training.
The term ‘speed play’ is exactly what it says on the tin – in that you get to play around with different speeds in an unstructured framework.
A Fartlek run involves continuous running with periods of faster running mixed with periods of easy running.
The idea is that you introduce short periods of running at a higher pace into your normal runs. These intervals can either be measured by distance or time (e.g. run for 200 metres or 30 seconds).
You can even use landmarks such as street lamps or post boxes as markers for your intervals, which arguably makes a Fartlek run all the more enjoyable.
What does Fartlek training improve?
Fartlek training is a great way to improve your speed and endurance in one session.
It was developed by the Swedish Olympic athlete Gösta Holmér as a way to experiment with different methods of improving fitness and adding variety to training.
It’s essential to add variety into a training plan, especially if you want to run faster for longer.
How is Fartlek training different from other forms of speed training?
There are four main types of speed training when it comes to running:
Exercise for speed is essential in order to run faster and for longer.
Here are examples of what each speed workout could look like in your training plan:
What are the benefits of Fartlek training?
There are many benefits of Fartlek training, namely that it is a great way to improve your endurance and speed.
Aside from improvements to speed and endurance, a Fartlek run has the following key benefits:
Sample Fartlek workouts
As mentioned earlier, Fartlek training can use distance, time or landmarks as the marker for the intervals.
Here is a sample Fartlek workout based on distance:
Here is a sample Fartlek workout based on landmarks. For this workout you’ll need to choose landmarks such as street lamps or post boxes and use them as markers for your intervals:
If you’re struggling for ideas or need some inspiration for landmarks, I have provided some of my favourite Fartlek training workouts at the end of this guide.
11 Fartlek training advantages and disadvantages
So what are the advantages and disadvantages of Fartlek training? In this section I’ll explain the key Fartlek training advantages and disadvantages.
When it comes to Fartlek training advantages and disadvantages, in my opinion, the advantages of Fartlek training far outweigh the disadvantages.
What are the advantages of Fartlek training?
One of the key benefits of Fartlek training is that it is a highly adaptable and flexible form of speed training.
This is one the benefits that attract runners to this form of training in the first place.
As such, Fartlek training is great for all levels of experience and fitness as it can be adjusted to the runner.
Fartlek training was originally designed for runners to improve endurance and speed in one session.
The fact that it combines periods of fast running with periods of easy running make it a great method for improving your endurance whilst focusing on your speed.
Your muscles include two types of muscle fibre: slow twitch and fast twitch.
Slow twitch muscle fibres are built for endurance activities like long distance running, whilst fast twitch muscle fibres are built for short, powerful bursts of energy.
In Fartlek training, because you are experimenting with different speeds, this encourages the build up of fast twitch muscle fibres.
Fartlek training is one of the most individualised forms of speed training, making it perfect for all levels of runner – from beginners to more advanced runners. It’s really about making it as hard as you want it to be.
The flexible, fun nature of Fartlek training makes it great for group training.
If you’re in a running rut, or have become bored with your current training routine, then Fartlek training is a great form of training to introduce a bit of variety and fun into your training plan.
What are the disadvantages of Fartlek training?
Owing to the highly individualised nature of Fartlek training, it means it can sometimes be hard to track progress over a period of time.
As above, because a Fartlek run is highly individualised in nature, it means it can be hard to keep metrics on your performance.
Whilst Fartlek training is an enjoyable and fun form of speed training, without a structured framework, there is a higher risk of injury.
If performed in an urban setting, be more mindful and careful when running near pedestrians and traffic.
When you don’t have a structured framework to work towards, this requires you to be a little more creative when thinking of workouts.
After all, you’re in the driving seat when it comes to specifying the intensity and distance of your workout.
#11 Requires you to be close landmarks in your local area
It’s not always possible to do Fartlek training using landmarks like street signs and lamp posts, especially if you live in a remote area.
If you don’t have these landmarks in your vicinity, then a Fartlek run using distance or time as the markers for your intervals will be the next best option.
5 fun Fartlek runs
Now that you know the key Fartlek training advantages and disadvantages, here are five fun examples of Fartlek training to give you some inspiration for your next Fartlek training session.
Run fast to the first street sign, then adopt an easy pace during your run to the next street sign. Repeat this as many times as you like.
Use lamp posts as markers for your fast and easy runs. Run at a slow to moderate pace to the first lamp post, then pick up the pace in a fast run to the next lamp post.
Use mail boxes as your markers for this fun run. Every time you see a mailbox, switch or alternate your pace.
This workout requires you to be in a relatively built-up area. Every time you see a bus, speed up then return to a slow to moderate pace when you see another bus.
If you’re an animal lover, you’ll love this workout. Every time you see a dog, speed up then return to an easy run when you see the next dog.