I have been trying to figure out the best way to test my HR. I don't own a trainer so that is out. I have rollers but I am still getting used to them, so they are not a good way to try and do the 2x20 test that is a sticky etc.
So I have the following route. It is right off of my neighborhood. While not flat. It is probably the flattest I can find in my area. It is quite hilly around here. On the plus side there is a traffic light at each end, but otherwise there isn't a stop sign or anything to keep me from moving for its entire length.
But is it flat enough?