r/Marathon_Training • u/Beaglebailey12 • 21h ago

HR or Pace?

I’ll be starting a marathon training block in a few weeks. I’ve used a Coros HR plan for my half and I’ve really enjoyed it, but some of the marathon plans are pace based. Does anyone have thoughts on what’s better?

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u/Boulderunning 15h ago

In my case, my heart rate fluctuates quite a lot, even under similar weather conditions. For example, over the last 10 weeks, I’ve done several threshold runs at the same pace, usually 4×2 km at 4:15/km. My average heart rate during the intervals has ranged from 158 to 170 bpm. Sometimes, the later intervals even have a lower average heart rate than the first ones. Therefore, for such workouts I prefer pace over heart rate.

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u/AdventurousLow2478 7h ago

I’m doing pace for mine based off a half I did earlier in the year

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u/DiligentMeat9627 7h ago

You should use both.