This calculator predicts rowing time at a new distance from a known rowing performance. It uses a power-law distance model: as distance increases, predicted time rises slightly faster than distance because sustainable pace generally slows.
The default exponent of 1.06 is a generic endurance assumption, not a rowing-specific guarantee. You can change the exponent to match your own performance history; predictions are most credible when the known and target efforts use similar equipment, conditions, and race intensity.
1. Enter a known distance
Use meters for a recent comparable effort.
2. Enter the known time
Use total seconds for that effort; for 7:00 enter 420.
3. Set the target distance
Enter the distance you want to predict.
4. Choose the exponent
Keep 1.06 for a generic model or adjust it based on your own history.
5. Review predicted time and pace
Compare the total time and 500 m pace with your pacing plan.
Predicted time = known time × (target distance ÷ known distance)^exponent
Predicted pace (sec/500m) = predicted time × 500 ÷ target distance
The prediction extends one known result to a different distance under the selected endurance exponent.
Large jumps in distance, different boat classes, or materially different conditions reduce comparability.
Given: 2,000 m in 420 sec, target 5,000 m, exponent 1.06.
Calculation: Time = 420 × (5,000 ÷ 2,000)^1.06 ≈ 1,109.5 sec. Pace ≈ 110.95 sec/500m.
Result: about 18:29.5, or 1:51.0/500m.
It controls how much pace is expected to slow as distance increases. A larger exponent penalizes longer target distances more strongly.
It is a generic endurance-model assumption used here as a starting point, not a guaranteed rowing constant. Your own race history may support a different value.
Yes. The same equation works mathematically for shorter targets, although sprint-specific performance may differ from a simple endurance extrapolation.
Enter total seconds. For example, 7:00 equals 420 seconds.
Reliability generally falls when the target distance is very different from the known distance or when equipment, conditions, technique, or effort level are not comparable.