Rowing Training Pace Calculator

By the Watta Team · Updated March 2026

The rowing training pace calculator derives personalised split targets for all five standard rowing training zones from your 2K erg time. The five zones — UT2 (utilisation training 2), UT1, AT (anaerobic threshold), TR (transport), and AN (anaerobic) — represent distinct physiological intensity bands, each targeting different energy systems and adaptations. Most training programmes prescribe sessions by zone rather than absolute pace, because the same split means different things for athletes of different abilities. A 2:05 split could be Zone 2 for an elite rower but Zone 5 for a beginner. This calculator removes the guesswork by converting your test performance into zone-specific pace ranges.

Training Pace Calculator

minsec
2K split: 1:45.0 /500m (302W)
UT2 (Low Aerobic)2:01.2 – 2:08.2
Easy steady state, conversation pace18–22 spm
UT1 (High Aerobic)1:55.6 – 2:01.2
Firm steady state, moderate effort22–26 spm
AT (Anaerobic Threshold)1:50.8 – 1:55.6
Threshold intervals, 10–20 min pieces26–30 spm
TR (Transport)1:46.8 – 1:50.8
Hard intervals, 3–8 min pieces28–34 spm
AN (Anaerobic)1:41.7 – 1:46.8
Max effort, sprints under 3 min32–40 spm

How This Works

Enter your 2K erg time. The calculator converts this to watts using the Concept2 formula, then computes each training zone as a percentage of 2K power output: UT2 = 55-65%, UT1 = 65-75%, AT = 75-85%, TR = 85-95%, AN = 95-110%. These watts are converted back to 500m splits to give you practical pace targets. The calculator also shows recommended stroke rate ranges and session descriptions for each zone.

Formula

Zone watts = 2K watts × zone%, then split = ((2.80 / zone_watts)^(1/3)) × 500

Examples

A rower with a 7:00 2K time (1:45.0 split, ~302W)

UT2: 2:05-2:12, UT1: 1:57-2:05, AT: 1:50-1:57, TR: 1:46-1:50, AN: 1:43-1:45+

A rower with an 8:00 2K time (2:00.0 split, ~203W)

UT2: 2:23-2:32, UT1: 2:14-2:23, AT: 2:06-2:14, TR: 2:01-2:06, AN: 1:58-2:00+

An elite rower with a 6:00 2K (1:30.0 split, ~466W)

UT2: 1:47-1:54, UT1: 1:40-1:47, AT: 1:34-1:40, TR: 1:31-1:34, AN: 1:28-1:30+

Benchmarks

LevelValue
UT2 (Low Aerobic)55-65% of 2K watts
UT1 (High Aerobic)65-75% of 2K watts
AT (Threshold)75-85% of 2K watts
TR (Transport)85-95% of 2K watts
AN (Anaerobic)95-110% of 2K watts

Watta Integration

Watta assigns every workout to a training zone automatically based on your profile and Effort Score, so you can see your zone distribution at a glance.

Frequently Asked Questions

Related Content

2K Time PredictorHR Zone CalculatorVO2max EstimatorUT2 TrainingUT2 (Utilisation Training 2) is a low-intensity aerobic rowing zone performed at 55-70% of heart rate reserve, forming the foundation of endurance training for rowers.Anaerobic ThresholdThe anaerobic threshold (AT2 or LT2) is the exercise intensity above which lactate accumulates faster than the body can clear it, marking the upper limit of sustainable effort.Split TimeSplit time is the pace expressed as the time it takes to row 500 metres on an ergometer, displayed in minutes and seconds (e.g. 2:00.0/500m).UT2 Training GuideHeart Rate Training for RowingConcept2 2K Training Plan
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