Zone 2 running typically corresponds to aerobic endurance training. It's often defined as the intensity at which you can maintain a conversation comfortably while running. This zone usually falls between 70-80% of your maximum heart rate or around 60-75% of your maximum effort.

As for the lactate threshold of 2 mmol/L, this indicates a relatively low intensity where lactate production is still minimal. At this point, your body can clear lactate efficiently enough to sustain exercise for an extended period. It's often associated with endurance efforts and can roughly correspond to the lower end of Zone 2 or the transition between Zone 1 and Zone 2.

Exact running speeds can vary widely depending on factors like individual fitness levels, age, and terrain. However, a rough estimate for Zone 2 running speed with a 2 mmol lactate threshold might be around 60-75% of your maximum effort, which could translate to a pace that allows you to comfortably maintain a conversation while running without feeling overly strained. For most people, this could be somewhere around a conversational jogging pace.

Clomp measures your muscle oxygen saturation level during your run and calculates at what speed your body reaches the lactate threshold of 2 mmol/L. So take advantage of both your heart rate as well as your muscle oxygen saturation data to run smart and build your aerobic endurance capacity. It is essential to listen to your body and adjust your pace accordingly during training sessions.