How long at each station? Circuit timing guide

Updated 6 November 2026

The 30 to 45 second range in the box above is a recommendation from practice, not a rule. No authority sets one correct station length: station times can be as short as 30 seconds on and 30 off or as long as the two-minute group rotations in the NFPT routine below, and what is right depends on how many people you have, how many stations, and how fit they are.

If you want a starting point and nothing else, use 40 seconds of work and 20 seconds to move. It makes each station one minute, which makes the arithmetic easy.

Pick the station length by class length and number of stations

First decide how much time the main circuit gets, then the number of stations, then work back to the station time. The table shows worked examples, with one person per station and everyone moving together. The numbers are our recommendations, not published standards.

Main block	Stations	Work / move	One round	Rounds	Break between rounds	Total
About 18 min	5	30 s / 15 s	3:45	4	1:00	18:00
About 20 min	6	40 s / 20 s	6:00	3	1:00	20:00
About 30 min	8	40 s / 20 s	8:00	3	3:00	30:00
About 43 min	10	45 s / 15 s	10:00	4	1:00	43:00

How to read it: in row two, six stations at one minute each make a 6-minute round, three rounds make 18 minutes, and two one-minute breaks bring the block to 20.

How to choose between rows: fewer stations with shorter work suits beginners and small spaces. Longer work and more stations suits experienced groups with room and equipment. If you are not sure, take the row that makes the block shorter than you think you need; you can add a round, but a class that runs over is harder to fix.

Rest between stations versus rest between rounds

These are two different jobs.

Move time between stations (15 to 30 seconds) is for walking to the next station, picking up equipment and getting into position. It is not recovery. If people arrive late to every station, your move time is too short, or the stations are too far apart.

Break between rounds (one to three minutes) is the recovery. This is where people drink water and catch their breath. A longer break after each full round lets people recover more before the next one. It also gives you a natural moment to explain what changes in the next round.

If your timer allows a different rest for each round, you can lengthen the break as the session goes on, since the later rounds tire people more.

Rotation for a group

When you have more people than stations, groups rotate, and the station time gets longer. A published routine from NFPT, the National Federation of Professional Trainers, shows one way to do it: each group spends two minutes at each station, 20 to 30 seconds are allowed for switching, and groups cycle through four full rotations. The class splits into three groups that start at stations one, two and three, and station four is a shared mini-break where everyone regroups for light aerobic movement. A five-minute warm-up and five-minute cool-down bracket the circuit, for 50 minutes total.

That example suggests a general shape: longer stations when groups share equipment, and a visible gap for switching. As a rough practical rule, which we could not trace to a published standard, aim for no more than three or four people at one station so that nobody stands idle.

Mixed levels: one clock, two intensities

You do not need two timers. Run one clock and give each station two versions of the move: a regular one and an easier one, and, if you like, a harder one. People choose. For example:

Station	Easier	Regular	Harder
Squats	Chair squats	Bodyweight squats	Jump squats
Push-ups	Incline push-ups	Floor push-ups	Feet-elevated push-ups
Core	Dead bug	Plank	Plank with reach

The timing stays the same; only the load changes. Warm up before the first round, and let beginners swap high-impact moves such as burpees, sprints and jumps for the easier version; anyone with pain should stop. Say the options out loud at the start, once, and do not make anyone explain which one they chose.

How to call the changes without watching a clock

An instructor who is looking at a stopwatch is not looking at the clients. One trainer, commenting on a Gymboss interval timer review, said that stopwatches “require me to pay too much attention to the time and not enough to my clients.” The fix is a timer that does the calling for you.

The American Council on Exercise’s article on cueing describes alerting cues as ones that tell participants about changes in movement or tempo before they happen, and gives counting down to a recovery period during intervals as an example. It also advises against excessive talking. Put together: let the timer announce the next station and count the last seconds, and keep your own voice for form, safety and encouragement.

Run it from your phone

A circuit is a repeating pattern, so any interval timer that has work, rest, rounds and a longer break will do. This guide shows how to set the fields. If you play music for the class, read the guide to timers and music first, since a timer that stops the music mid-class is a bad surprise. For the ratio choice itself, see the HIIT ratios guide.

Running a circuit in Countcall

In Countcall, you can save a circuit as a workout with named stations. The saved workout’s voice says the next station’s name and the seconds, the numbers are very large, and you can give each round its own rest, so the break after round one can be different from the break after round two. Your music keeps playing and, by default, dips while the voice speaks (a setting you can switch off); spoken audio such as podcasts pauses instead. The free version keeps two saved workouts. The app is not in the stores yet; join the waitlist below for one email when it is.