So I went out for a nice 40 mi ride, 3rd ride since I got it for Christmas/Birthday. Today I noticed that when I was looking at the route versus the speed/cadence, it did not seem to line up. There was one point where we got to a nice long lonely staight away and I did a nice sprint up to max heart rate ,and then a cool down till the pack caught up.
About 10 miles later we went out 5 mi in a nice paceline, stopped for water, and then returned and stopped again at the park for refills and a potty break.
In all 3 cases the speed "peak" in the case of the sprint or the cadence and speed "valley" in the case of the rest stops, all seem to be off by about 1.5 mi compared to the map. I understand the the GPS is accurate to maybe 100 meters, but 1.5 mi?
Has anyone else had anything similar?