I was doing and "out and back" ride yesterday and decided to try the Navigate back to start feature. I picked to return by the same route. I rode back the exact same route except for the fact I was on the other side of the street. During a section of the ride that was entirely straight for about 7 miles I was constantly being shown that a turn was coming up in XXX feet. This happened several times when in fact it should have been straight ahead for 7 miles. I'm not sure what it was but I'm going to try it again today and see if I did something wrong.