Lactate Threshold Tempo RunsIn this article, you’ll learn not only what a Tempo is, but also why you should include them in your training (for any race of 5k+), the proper way to run a Tempo, when during your training schedule you should include Tempos and finally some examples of proven Tempo run workouts.

Bottomline…this is the very detailed guide to Tempo Runs and will help you understand how and why you should include them in your training for races of 5K+.

What Exactly is a Tempo Run?

At the risk of getting a little to “sciencey” here, I’ll do my best to describe tempos.

Tempos can also be known as aerobic threshold (most common), anaerobic threshold or lactate-threshold runs. However, it’s important to note that these are 3 different runs, that each serve a purpose. Aerobic threshold runs are the most common and run at a pace where you’re producing the maximum amount of lactate that your body can clear from your muscles and blood stream. If you were to run any faster, you wouldn’t be able to clear the lactate that’s being generated and you would then experience a burning sensation and fatigue in your legs. This is the feeling you get at the end of a short, hard race or during an interval workout.

To get the benefit of Aerobic Threshold Tempo Run for marathoners you want to run it just near your lactate threshold and not any faster.

The goal of the lactate threshold workouts is to move that point where lactic acid begins to accumulate. We can accomplish this with repeat 2-3 mile intervals, sometimes referred to as cruise intervals. These are completed at a specific target pace (discussed below).

Lastly, the anaerobic threshold run is performed at the level of intensity where lactic acid accumulates faster than it can be cleared. Increasing our anaerobic threshold is important because it allows the body to run at faster speeds before fatigue and lactic acid take over.

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Why Should You Include Tempo Runs in Your Training?

Tempo runs are essential for long distance runners training for races of 5k+. Depending on the distance and type of tempo these are the most “race specific” workouts you will complete during your training. However, Tempos shouldn’t be the only hard workout during your training. Remember, variety is essential to getting in shape (https://middleagemarathoner.com/10-rules-to-marathon-success/).

Ideally the goal of the Aerobic Threshold run for marathoners is to teach our body how to burn fat efficiently at marathon pace and improve our body’s ability to run longer at this high end aerobic pace. Said another way, Tempos improve your ability to hold a challenging pace over a longer period of time. However, if we run too fast at what’s a anaerobic threshold pace, we improve the body’s ability to buffer lactate, but we don’t improve our body’s marathon specific readiness.

What we want is to boost our lactate threshold and we do this best by running at or near our threshold pace for an extended period of time, because our body becomes more efficient at clearing lactate. Because tempo rare completed at one assigned pace (as opposed to progressive runs, fartleks or intervals where you typically vary the pace), they ultimately (after 3-4 tempos) also improve your sense of pacing.

The faster you can run while still clearing lactate, the faster you’ll be able to race. However, there’s also a significant mental aspect as well. Tempo runs are challenging, stressful and mentally fatiguing. You need to train yourself to maintain your tempo pace for the duration of the workout. I’ve coached many athletes and some tell me that the hardest part of the tempo (especially longer tempos) is being able to maintain the pace throughout the run. Your mind can wander, you get tired and your pace can slow if you don’t concentrate on maintaining the designated pace.

In summary, tempo runs help to run faster for longer periods of time, they teach your body how to tolerate more discomfort and they also help develop mental toughness.

How to Pace a Tempo Run

Completing a tempo can be challenging for many runners because they don’t understand the pace and or distance for the workout. I’ll admit, it can be confusing and you may be tempted to run the workout too fast or start too fast and fade. But, it really doesn’t need to be too difficult to determine your pace. The problem comes when runners perform this workout at the wrong pace, because they can greatly compromise its intended training benefits, get injured or worn down.

There a few variations to tempo workouts (which I will discuss below), depending on the outcome desired and the timing in your training schedule.

Tempos are run at a pace that’s faster than “moderate” but not exactly “hard.” Many experienced runners can run them by feel or perceived effort.

It’s important to understand that your tempo pace at the beginning of the season will likely be slower than at the end due to fitness improvements. Your pace could also vary in weather elements or fatigue levels.

Tempos are NOT run at your goal pace. Instead you need to figure out the pace at which you can no longer comfortably speak a full sentence (try repeating something like the “Pledge of Allegiance”). This is the point that many coaches call “comfortably hard.” It’s a tough effort, but you shouldn’t be gasping for air.

Depending on the race for which you’re training at your current ability, tempo pace could be similar to a very recent 1/2 marathon or 10k pace. However, my strongest recommendation is to simply use the “talk test” and run by feel. The longest tempos in my marathon training are about 60 – 70 minutes.

Another way to run a Tempo is by heart rate. This only works if you know your max heart rate (mine is in the low 170s). After your warm-up, I typically recommend about 80% of max heart rate through the duration of the run. Any faster and you’re actually in an anaerobic zone and you’ll likely won’t be able to maintain the pace for too long. You can learn how to calculate and train by heart rate by reading my article (https://middleagemarathoner.com/training-using-heart-rate-monitor/). For many runners, using a heart rate monitor can be an easy way to ensure they’re in the right range for the workout. If you don’t have a HR monitor, it’s simply a matter of looking at your watch and monitoring your pace as you move through each mile.

If you run your tempos by feel, your pace will eventually quicken.

Types of Tempo Runs

There are generally three types of tempo workouts: sustained tempo runs (20 – 70 minutes at one pace), repetitions (repeat 10 – 20 minutes at tempo pace with a short (1-2 minutes) recovery in between each) and tempos that are mixed into intervals or longer runs. As with other two types of tempo workouts, this latter type of tempo is beneficial for increasing the aerobic threshold. It’s important to maintain the assigned pace during the tempo portion of your workout.

Legendary coach Jack Daniels also recommends inserting periods of Aerobic Threshold running into long runs. For example, two 20 minute tempo runs that bookend a one hour easy run. Coach Daniels schedules this run bi-weekly in the latter stages of race preparation.

The one real requirement of tempo running is that you stick to a steady, specific, planned pace.

When to complete Tempo Runs

If you’re training for a shorter race, tempo runs are best done early in the season during base or foundation training. Tempos completed early in your training will help build endurance that can support race-specific fitness later in your training cycle.

If you’re training for longer races such as a 10km or longer, tempos are best if completed during the mid to late portion of your schedule.

Some coaches have their runners perform two of these workouts every three weeks during a marathon build-up. As the race approaches (but before tapering) the runner can increase the frequency to one tempo effort weekly. I typically perscribe weekly tempos in weeks 7-11 of a 12 week marathon training plan.

Tempo Run Workouts

Tempo Workout #1

This workout is from Coach Greg McMillan. In the past, I’ve had excellent results training under Coach McMillan. This first workout is perfect for 10km or half marathon. You complete multiple tempos, but with some hills between. It’s a tough workout so my recommendation is to insert an additional recovery day before your next hard/long workout.

The steep hills between the 3 mile tempos will fill your legs with lactic acid so the second tempo helps to simulate that feeling of tiredness at the end of a race.

The key to this workout is to try your best to run the second tempo run at the same pace as the first. To make things a little easier, if you’re really struggling, the 2nd Tempo can be shortened to 2 miles. This workout teaches your body & mind to “dig deep” when you’re aching and simply want to stop. Successfully getting through this workout will really boost your confidence.

1. 15 minutes warm-up at easy pace

2. 3 mile tempo run

3. 3 minute jog recovery

4. 4×30 second steep hills

5. 3 minute jog recovery at easy pace

6. 2 – 3 mile tempo,

7. 15 minute cool down at easy pace.

This workout does wonders for your confidence because you must overcome the feeling of lactic acid that builds up in your legs during and after the hill repeats. Completing this workout will help prepare you to not give up when you feel like you can’t keep going.

I really like this this Tempo for runners who are fit, but don’t have a race scheduled anytime soon.

Tempo Workout #2

This is your traditional Aerobic Threshold Tempo Run and includes one block of running at tempo pace. Depending on where you are in your training plan will determine the length of the run at tempo pace.

1. Start with a 10-15 minute (or 1 mile) warm-up.

2. Run 20 – 30 minutes but with no break or recovery in the middle of the effort.

3. Each week increase the length of the tempo by 10 minutes until you reach 60 minutes.

4. End each tempo with 10-15 minutes (or at least 1 mile) cool-down.

Tempo Workout #3

This workout is similar to intervals, but will help improve your Lactate Threshold because it’s done at your tempo pace. The recovery is kept to a short 60-90 seconds and the repetitions are generally longer.

1. Start with a 10-15 minute (or 1 mile) warm-up.

2. 3 x mile at tempo pace with 90sec jog recovery.

3. Finish with 10-15 minutes (or at least 1 mile) cool-down.

Tempo Workout #4

This workout is similar to the sustained or traditional tempo mentioned above except in this run is called a lactate clearance run. Technically it’s a anaerobic threshold run.

During your sustained tempo runs insert a 30-60 second surge at about 5k pace every 5-8 minutes. The surge will bring on more lactate into the blood stream. When you slow back into your tempo pace, your body will then have a chance to clear that lactate, even as you maintain tempo pace.

It’s a tough workout again, but it will train your body to process lactate more efficiently, which ultimately makes your lactate threshold pace slightly faster.

As you can see, Tempo runs are an excellent way for runners of all levels to work on building their speed and strength.

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Tempo runs are also helpful for developing the mental toughness and stamina needed for racing, since you practice running at a pace that’s a little outside of your comfort zone.

In summary, each of these types of tempos & their associated paces causes increased effort and physiological difficulty when completed. When we successfully run at these paces or training zones, you can ultimately race farther and faster more comfortably.

Sources:

1) runnersworld.com
2) strengthrunning.com
3) runnersconnect.net

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