What is the importance of lactic acid management in races?

• A. Lactic acid buildup has no impact on performance
• B. Going out too hard leads to excessive lactic acid, impacting performance later
• C. Lactic acid helps sustain performance in later stages
• D. Lactic acid only matters in endurance events

Answer: (B)

Pacing to manage lactate buildup is about staying in a zone where your body can clear and reuse lactate as you go. When you push hard, your muscles turn to anaerobic metabolism to get quick energy, producing lactate along with hydrogen ions. If lactate and acidity accumulate faster than your body can remove them, the muscles’ enzymes don’t work as well, calcium handling falters, and force production drops. That rapid fatigue means you’re not able to sustain the pace later in the race, even if you start strong.

So, the best approach is to hold a pace near or just below your lactate threshold, where you can maintain a higher intensity for longer and delay the late-race fade. Training to raise that threshold and improve lactate clearance helps you tolerate higher intensities and finish stronger. Lactic acid management matters across race distances, not just in endurance events.