As much as rowing seems like an exercise in the arm, most of the strength for each stroke really comes from the leg push. It's also important to note that it's not just how many strokes a minute you can do, but about the quality of each stroke and how much space you can create for each stroke.
100 meter Row 800 meter Run* 200 meter Row 300 meter Row 400 meter Row 500 meter Row 600 meter Row 700 meter Row 800 meter Row 900 meter Row 1,000 meter Row