RunPackGuides · 6 min read
Zone 2 running: what it is and how to find your pace
Zone 2 running explained: what heart rate and pace it means for you, why most runs should feel this easy, how to find it without a watch, and common mistakes.
Zone 2 is the easy end of running: slow enough to talk in full sentences, steady enough that it still feels like a run. Most training plans, from couch to 5K to marathon, quietly put the majority of your weekly running here. If zone 2 feels frustratingly slow at first, that’s normal, and it’s also the point.
What zone 2 means in numbers
Heart rate zones split your effort into five bands. Zone 2 is roughly 60–70% of your maximum heart rate, or the same share of your heart rate reserve if you use your resting heart rate too. For a 35-year-old with an estimated maximum of 184, that’s about 110–129 bpm on the simple method. Work out your own with the heart rate zone calculator.
As a pace, zone 2 is usually 60 to 90 seconds per kilometre slower than your 5K race pace. A 25-minute 5K runner (5:00 /km) might run zone 2 at around 6:00–6:30 /km. The pace calculator turns a race time into a pace.
No watch? Use the talk test
Heart rate is one way to find zone 2; your breathing is another. If you can say a full sentence comfortably, you’re there. If you can only get out a few words, slow down. More in conversational pace. It’s also why zone 2 is the natural pace for running with friends.
Why bother running this slowly?
- You can do a lot of it. Easy runs leave you fresh enough to run again tomorrow, so your weekly total can grow.
- It builds the engine. Steady aerobic running is what most of endurance fitness is built on.
- Your hard days get better. If every run is medium-hard, you’re too tired to run your fast sessions properly.
A common rule of thumb is roughly 80% easy, 20% harder. For most recreational runners, that means one quicker session a week, and the rest easy.
Common zone 2 mistakes
- Chasing a pace instead of an effort. Hills, heat and tiredness all raise your heart rate. Slow down on those days rather than holding the number.
- Trusting a formula too much. “220 minus age” can be off by 10 beats or more. If your zone 2 heart rate feels like a struggle, the estimate is probably wrong for you.
- Walking is fine. Early on, keeping your heart rate in zone 2 on hills may mean walking them. That’s still zone 2 training.
- Expecting overnight change. Your easy pace speeds up gradually over weeks of consistent running.
Zone 2 with friends
Easy runs are the ones to share: you can chat, and a slower friend sets a pace that’s good for both of you. RunPack is our app for running with friends: everyone’s runs land in a private feed for your crew, and with a watch or ring it reads your resting heart rate, heart rate variability and sleep each morning to suggest whether today is an easy day.
Training guidance only, not medical advice.