Threshold run
[thresh-hold run]
/ˈθrɛʃˌhoʊld rʌn/
Noun
A threshold run is a type of training run performed at a pace that is comfortably hard, typically at or near the lactate threshold, to improve endurance and increase the body's ability to sustain high-intensity efforts.
A threshold run, or tempo run, is a workout performed at a pace just below the lactate threshold, where lactate begins to accumulate in the blood. This pace is typically sustainable for about 20-30 minutes and is faster than a long run but slower than a 5K race pace. Threshold runs improve the body's ability to clear lactate, enhancing endurance and speed. For example, a runner might perform a 20-minute threshold run at a pace they could maintain for an hour. This type of training is crucial for increasing stamina and race performance, especially in distances like the 10K or half marathon.