Heart Rate Training for Rowing

By the Watta Team · Updated

Heart rate training ensures you are working at the right intensity for your goals. This guide covers rowing-specific heart rate zones, how to calculate your targets, and how to use heart rate data to optimise your erg training.

Why Train by Heart Rate?

Heart rate is an objective measure of physiological stress. Unlike split time, which varies with fatigue, hydration, and motivation, heart rate tells you exactly how hard your body is working. Training by heart rate prevents the two most common mistakes: going too hard on easy days and too easy on hard days. It ensures each session delivers the intended training stimulus.

Rowing Heart Rate Zones

Rowing uses five training zones, and this site states all of them as percentages of heart-rate reserve rather than of max, because reserve accounts for your resting rate and so for your fitness. UT2 (60–70% of reserve) builds aerobic base; UT1 (70–80%) develops the upper aerobic range; AT (80–90%) works the anaerobic threshold; TR (90–100%) targets VO2 max; AN is everything above, for short maximal work. Most training belongs in UT2, with targeted higher-zone work once or twice a week. Beware plans that quote zones against max HR instead: the same UT2 band reads as roughly 71–78% that way, which looks harder than it is.

Calculating Your Zones

The Karvonen method works from heart-rate reserve: target HR = resting HR + fraction × (max HR − resting HR). With a 190 bpm max and a 50 bpm resting rate the reserve is 140 bpm, so the UT2 band at 60–70% of reserve is 134–148 bpm. Change the resting rate and the band moves: at a 60 bpm resting rate the same max gives 138–151 bpm, which is the whole reason reserve beats a flat percentage of max. Establish max HR with a genuine maximal test rather than 220 − age, which is a population average and can be 10–15 bpm out for an individual.

Practical Application

Wear a chest strap HR monitor during all erg sessions. Set heart rate alerts on your watch for your target zone boundaries. During steady state, if HR drifts above UT2, slow down. During intervals, use HR recovery between repeats to gauge readiness — when HR drops below 130 bpm, start the next interval. Log all sessions with HR data in Watta for the most accurate Effort Score.

Choosing an app?

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Tips

  • +A chest strap is significantly more accurate than a wrist-based sensor during rowing.
  • +Max HR from rowing is typically 5-10 bpm lower than from running due to the seated position.
  • +Do not chase the same HR zones from running — calculate rowing-specific zones.
  • +Check whether a plan states its zones against max HR or against reserve before following it. The same session can be written as 70% of one or 60% of the other.
  • +Resting HR should be measured first thing in the morning before getting out of bed.
  • +Watta uses your HR data to calculate the Cardiac Load component of your Effort Score — always log HR when available.

Further Reading

Frequently Asked Questions

What heart rate should I row at for steady state?
Your UT2 band: 60–70% of heart-rate reserve by the Karvonen method, which is 134–148 bpm for a 190 bpm max and a 50 bpm resting rate. It should feel genuinely easy — you can speak a full sentence.
Is max HR the same for rowing and running?
No. Rowing max HR is typically 5-10 bpm lower than running max HR because rowing is seated and uses different muscle groups. Use a rowing-specific max HR test for accurate zones.
Do I need a heart rate monitor?
It is strongly recommended for effective training. Without HR data, it is very difficult to hit the correct UT2 intensity — most people row too hard. A basic chest strap HR monitor costs around $40-60 and dramatically improves training quality.

Related Content

UT2 Training GuideSteady State Rowing Guide2K Rowing Test GuideHeart Rate Zones (Rowing)Heart rate zones in rowing are five intensity bands based on resting and max heart rate, used to target different training adaptations.Aerobic ThresholdThe aerobic threshold is the exercise intensity where lactate begins to rise above resting levels, typically around 55-70% of VO2 max in trained rowers.Lactate ThresholdLactate threshold in rowing is the exercise intensity at which blood lactate begins to accumulate exponentially (approximately 4 mmol/L), representing the upper boundary of sustainable aerobic effort.UT2 TrainingUT2 training is low-intensity aerobic rowing at 55–65% of 2K power — heart rate 60–70% of heart-rate reserve, 18–22 spm — and it forms the foundation of a rower's endurance fitness.Karvonen FormulaThe Karvonen formula calculates personalised heart rate training zones using heart rate reserve: Target HR = Resting HR + (Intensity % × (Max HR - Resting HR)).Heart Rate Reserve (HRR)Heart rate reserve is the difference between maximum heart rate and resting heart rate, used in the Karvonen formula to calculate personalised training zones for rowing.Maximum Heart RateMaximum heart rate (HRmax) is the highest number of beats per minute your heart can achieve during all-out exercise, used as the ceiling for calculating training zones.HR Zone CalculatorUT2 Pace CalculatorEffort Score CalculatorFor RowersFor Competitive Rowers
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