Tempo or threshold run
The tempo run is the bread and butter of most training schedules and running them at the correct effort is critical to extracting maximum benefit from the workout. From a pacing perspective, tempo runs are usually completed between 10-mile and half marathon pace, depending on the distance of the workout.
What are the training benefits of a tempo run
A tempo run, or lactate threshold run, is defined as the fastest pace you can run without generating more lactic acid than your body can utilize and reconvert back into energy.
As you learned in your quick lesson on lactic acid, your body can only “clear” or reconvert a certain about of lactic acid back into energy before the lactate floods our system and contributes to fatigue. To race faster, you must teach your body to clear lactate more efficiently.
By running just below your lactate threshold you can begin to decrease (or improve, depending on how you look at it) the pace at which you begin to produce too much lactic acid for your body to manage. This will enable you to run faster and longer before you produce more lactate than your body can clear, thus enabling you to run faster.
However, running too fast or too slow for a tempo run diminishes the benefits because you’ll either produce too much lactate quickly (by running too fast); or you’ll not produce enough lactate (running too slow) and not challenge your body.
Therefore, it’s critical that you learn how to feel what tempo pace should be.
What does a tempo run feel like
A tempo run should feel like a “hard, but controlled effort”. You should be able to continue your tempo pace for 30-45 minutes.
Again, you can use your breathing rhythm to monitor your effort.
- Tempo runs should typically be performed while breathing at a 2:2 ratio (two steps – one with your left, one with your right – while breathing in; two steps – one with your left, one with your right – while breathing out). A 2:2 breathing rhythm enables you take about 45 breaths per minute.
- Likewise, you can use the same “talk test” mentioned above to determine if you’re running in the correct effort range. During a tempo run, you should be able to say one or two sentences out-loud, but you couldn’t speak in full paragraphs or complete thoughts. Try this talk test during your next tempo run and you’ll virtually guarantee you’re in the correct effort range.