A running plan says one minute running and ninety seconds walking. Your timer says Work, Rest and Rounds. Translating between the two should be straightforward, but units and the final recovery can change the session you build.

An interval timer for running repeats a fixed effort and recovery. Choose the schedule from your plan first, then enter it and check the total. The timer controls duration; it does not choose an appropriate pace or training progression for you.

What run/walk intervals are for

Run/walk training alternates running with planned walking periods. The walk is part of the session, rather than evidence that the session failed. Dividing time this way lets a plan introduce running in smaller portions instead of requiring one continuous run immediately.

The NHS Couch to 5K programme uses a gradual run/walk approach for beginners, with rest days between runs. Its sequence provides the progression; the timer simply helps follow it.

This format can be useful when beginning a suitable running programme and wanting clear boundaries between running and recovery. Faster intervals for performance training are a different use of the same clock. They need a different plan, not just fewer walking seconds.

Before choosing settings, decide which kind of session you mean. That prevents a beginner run/walk outing from quietly becoming a sprint workout because both happen to contain intervals.

Keep time and distance separate

A timed repetition does not represent a fixed distance unless you hold a particular pace. At a steady 6:00 per kilometre, a ninety-second effort covers 250 metres. At 4:00 per kilometre, the same time covers 375 metres.

So replacing “400 metres” with “ninety seconds” changes the workout unless that time fits your intended pace. For distance repetitions, use measured markers or a suitable watch. For fixed durations, use the beep as the boundary and accept that distance may vary.

The running splits guide explains how to record individual efforts and recoveries when you want to compare them later.

Account for the parts outside the repeats

This timer starts the first Work period immediately. It does not insert a warm-up before it or name the next exercise. Complete your preparation first, then start when you are ready.

A ladder of one, two and three-minute efforts is also different from repeating one work/rest pair. The current timer does not schedule a custom ladder automatically. Use separate sessions or a tool that supports the exact sequence.

Translate the plan into settings

The 1:1 running preset starts with Work 60 seconds, Rest 60 seconds and 10 rounds. That is twenty minutes, including the final walking period.

For a different repeated pattern, edit those seconds fields. Work 60, Rest 90 and Rounds 8 produces twenty minutes: eight runs totalling eight minutes and eight walks totalling twelve.

That arithmetic does not make it an exact copy of every beginner programme. For example, the NHS Couch to 5K plan includes warm-up and cooldown walks, and its first session distinguishes the final run from the earlier run/walk pairs. Follow the actual plan rather than relying on a similar-looking preset name.

Watch the units

On the main interval timer, Work and Rest use whole minutes. Work 2 and Rest 1 mean two minutes running and one minute recovery.

On an interval preset page, the same settings are Work 120 and Rest 60 because those fields use seconds. Presets are the useful starting point for ninety-second periods or other lengths that are not whole minutes.

Before pressing Start, read the total under the settings. For ten rounds of two minutes running and one minute walking, expect thirty minutes. If the total surprises you, check the units and round count before changing your training plan.

Test the cues where you will use them

A beep that sounds clear indoors may be hard to hear outside. Test at a safe location without letting the phone distract you from your surroundings.

More importantly, locking the phone or switching apps can suspend browser sound. Keeping accurate elapsed time after the page resumes does not guarantee every cue arrived. If reliable pocket or locked-screen alerts are essential, use a running device or app intended for that job.

Try it: enter your run/walk schedule on the seconds-based preset.