Running vs rowing, which is more difficult?   stance: agree:
Rowing is def. more intensive. The legs are typically the strongest limbs in the human body. Rowing for distance or time can be extremely taxing on the upper body and core. This argument of course assumes a person has cross-trained for each form of event equally. Not everyone is a natural runner of course but may have insane upper body strength, and vise versa. So it depends person to person. However, for the theoretical all-rounder, I'd have to say rowing.