Structured running workouts on Garmin: pace, intensity and intervals

What a structured workout gives you

On a free run, you watch your watch. On a structured workout, it watches you. Each step carries its duration or distance and its target, and the sequence runs itself: no mental arithmetic between reps, no miscounting on the tenth interval.

The other benefit is less visible but matters more over time: what is written is measured. A workout planned and then completed leaves a comparable trace you can judge the load against.

Targets available for running

Garmin accepts four kinds of running target, plus no target at all. The choice is not cosmetic: it decides what the watch displays and what it nags you about.

• — Pace, in minutes per mile or kilometre, with a low and a high bound. The most readable target, and the most used on flat ground.
• — Percentage of maximal aerobic speed, which thinks in relative intensity rather than clock time. Handy for transposing a session between athletes.
• — Percentage of maximum heart rate, more honest uphill, in heat, or late in a block, when pace lies about the real effort.
• — Cadence in steps per minute, useful for form work rather than intensity work.

Mixing target types within one workout is perfectly legitimate: pace on the reps, heart rate on the recoveries, an open step for the warm-up.

Three staple sessions, and what they buy

The same three families turn up in nearly every plan, whatever the race distance being prepared.

• — Short intervals, say ten times four hundred metres near 95% of maximal aerobic speed with a minute of recovery: aerobic power and tolerance to intensity.
• — Threshold, typically twenty to forty minutes at the pace you could hold for an hour: the best ratio between gain and fatigue left behind.
• — The long run, in easy aerobic endurance, driven by heart rate rather than pace so it does not drift too fast.
• — Hills, in short reps, where only heart rate or perceived effort mean anything: pace is unusable there.

A well-built week rarely combines more than two of them, with easy running in between.

Having an AI write the session

Describing a session in one sentence and finding it on the watch removes the most thankless step: typing it in. The assistant turns intent into typed steps, applies the matching target, and puts the session on the Garmin calendar for the chosen date.

The real value shows over time: the assistant reads back completed sessions, compares them to the plan, and adjusts what follows. The connection guide explains how to link Claude, ChatGPT or Gemini to your account.

Frequently asked questions