

I suppose you could get a shape like this if you tried to draw a square by true headings and bearings near the North pole of a sphere. “Turn heading 090, travel 10 miles. Turn heading 180, travel 10 miles.” and so forth. Start at a spot close to the pole and this will be your ground track.
Actually no it isn’t, because attempting to make a square you’d make four turns in the same direction, this would require turning left, right, right, left.
Cycling is a different animal to riding. On a bicycle, you are doing athletic work, so your body is warming itself up, on a motorcycle, you are almost entirely idle. Also, top speed on a bike is low cruise on a motorcycle. In town it’s probably not so bad but if you do any distance by highway it’s a WHOLE other thing.