I honestly haven't ever kept track of the time it takes me to mow, but here are my estimates. I have a little over an acre. Its not all grass. I'd say about 3/4 acre to mow. I do about 1/2 of that at once. Its hard to say. It takes (I'm guessing) roughly 30-35 minutes to do the yard area (red). The field (yellow) gets mowed ever 2-3 weeks depending on the weather. It doesn't take but 25 minutes I'd guess since there isn't things to mow around. It also grows much slower than the yellow area.