What is the distance covered by the path around the lake -- at lake level.

1.5 miles

Per: my Intrusive Physical Activity Monitor (TM), it is 0.94 miles from the big pine tree w/ picnic tables at the north park entrance along the asphalt path, around to the south part of the lake to the lower path, and back to the pine tree. Not quite a mile.

About 1/2 mi to 1. Takes no time at all to walk around. Doesn't make you a bit tired.

I am not sure.

I dont know the exact distance but i would think about 1-1.5 miles