Cadence is just steps per minute, counting both feet, not one. It's one of the two numbers that make up your running speed: speed equals cadence multiplied by stride length. That identity is the whole reason cadence gets talked about at all. Two runners moving at the same pace can get there completely differently, one taking quick, short strides at a high cadence, the other taking longer, slower strides at a lower one. Neither number alone tells you your pace, and neither number alone tells you whether your form is good.

The two sides of that identity are also locked together, which matters before treating a higher cadence as automatically better. Push cadence up without changing your pace, and stride length has to shrink to compensate, since the two multiply to a fixed speed. Cadence and stride length are two variables describing the same output, not two separate scores you can max out independently.

Where 180 came from, and why it is not a target

The number that gets repeated most often in running circles is 180 steps per minute. It did not come from a study of what's optimal for every runner, it came from observing elite distance racers at competition pace and noticing that a lot of them landed somewhere around that figure. That's a description of a specific population moving at a specific, very fast effort, not a prescription for anyone lacing up for an easy jog. Cadence naturally varies with height, leg length, and speed. A taller runner with longer legs will often cover the same ground at a lower cadence than a shorter runner, and neither is doing it wrong. Treating 180 as a universal target ignores that cadence was never meant to be one-size-fits-all in the first place.

Reading your own number

The useful way to look at cadence is relative to yourself, not to a stranger's number from a study. Cadence rises naturally as pace increases, so a fair comparison only holds between similar efforts: your easy-run cadence against your last easy run, your tempo cadence against your last tempo run. Comparing an easy jog's cadence to a hard interval's cadence and drawing conclusions from the gap is comparing two different things that were never going to match. The more useful habit is watching the trend over weeks at a similar effort level, rather than fixating on any single run's number. If your easy-pace cadence is gradually climbing over a training block without you deliberately forcing it, that's often just a sign your running economy at that effort is improving, not something you need to intervene on.

If you decide to nudge it

A very low cadence at an easy pace often shows up alongside long, loping strides that reach further out in front of you, which tends to mean more braking with each step as your foot lands ahead of your body. If you decide that's worth adjusting, the sensible approach is a small nudge, a few percent higher, held over a period of easy runs, not an attempt to force your way to 180 in a single session. A sudden, large change to a movement pattern your body has been running with for years is a bigger disruption than most runners expect, and there's no evidence that hitting a specific cadence number by itself prevents anything or fixes anything on its own. It's one variable among many in how you move, not a switch to flip.

How Zirv tracks it

On iOS, Zirv captures cadence automatically during a run using the phone's motion data, and shows your average cadence for the run in the workout summary afterward. It's there to give you a number to track your own trend with, alongside effort measures like heart rate zones, rather than a target to chase toward someone else's average.

The takeaway

Cadence is one half of an identity, speed equals cadence times stride length, not a standalone score to optimize. The famous 180 came from watching elite racers at race pace, not from a rule that applies to every runner at every effort. Read your own number against your own similar efforts, watch how it trends as your training changes, and if you do decide to nudge it, do it gradually. That's a more honest way to use the number than chasing a figure that was never about you in the first place, whether you're working on it as a standalone focus or as part of hybrid training where running is only one piece of the week.