Threshold pace

Threshold pace is the running pace at around the hardest controlled effort you can hold for a long time. It is the running counterpart of cycling’s FTP, and it anchors your pace zones and the load calculation for your runs.

What is threshold pace?

Around your threshold, the way your body supplies energy shifts. Below this pace you can keep the effort going for a long time and the build-up of acid in your muscles stays manageable. Above it, fatigue climbs quickly and you soon have to ease off. Threshold pace marks that turning point as a practical training anchor — not an exact physiological limit, because that moves with daily form, heat and fatigue.

For most trained runners, threshold pace feels "hard but controlled": you can only talk in short bursts, but the pace doesn’t fall apart. It usually sits close to the pace you could hold in a race of roughly an hour.

How do you find your threshold pace?

A common field test is a solo time trial of about 30 minutes on flat ground, taking your average pace over the last 20 minutes as an estimate of your threshold pace. The main pitfall is starting too fast, so the second half collapses and the estimate comes out too low.

Recent race results are a good alternative. For many runners a 10 km race sits close to threshold intensity, and from longer or shorter distances you can derive your threshold with common calculation models. A lab lactate test is the most accurate, but most athletes don’t need one.

Recheck your threshold pace from time to time. After a good block of training it can shift noticeably, and zones that lean on an out-of-date threshold will steer your training the wrong way.

How Trimetra personalises this

Trimetra estimates your threshold pace from your own training and races and continually compares that with the anchor you have set. If your demonstrated level differs consistently, you get a suggestion to update the anchor — you decide, and the app never quietly changes your settings. Suggestions only appear once there is enough reliable data.

Frequently asked questions

What does running at threshold pace feel like?

Firm but controlled: you can only talk in short sentences, but the pace doesn’t collapse. For many runners it sits close to the pace they could hold in a race of about an hour.

What is a good threshold pace?

There is no universal number — threshold pace is personal and depends on your level and training history. So only compare it with your own earlier values. A threshold that rises over months says more than any comparison with someone else.

How often should you re-test your threshold pace?

Recalibrate after a solid training block, after a long break, or when sessions in your current zones consistently feel too easy or too hard. Zones that lean on an outdated threshold steer your training the wrong way.