What is Threshold Pace?

Threshold pace is the fastest pace you can sustain aerobically for roughly 45-60 minutes before lactate starts to accumulate faster than your body can clear it. It’s the anchor point for setting running training zones - from easy aerobic runs up through tempo, threshold, and VO2 max efforts - and is typically estimated from a maximal 20-minute time trial.

How to Use This Calculator:

• Run a 20-minute time trial at your best sustainable, all-out effort.
• Enter your average pace for the 20 minutes and select whether it’s per km or per mile.
• You can share your results with a link once calculated.