ErgRow Drag Factor Calculator Rowing Optimizer Target Distance 500m Sprint 1000m Race 2000m Test 5000m Head 30 Min / 6k 10k / 60 Min Half Marathon Gender MaleFemale Age Bodyweight (kg) Strength Level (1-10) Endurance Base (1-10) Mindset / Aggression (1-10) CALCULATE OPTIMALS Drag Factor — Target SPM(Strokes/Min) —