HLaB
Marie Attoinette Fan
I think the iphone only records data every 5secsThe problem with how Strava calculates speed will always throw up these weird high speeds. The problem is that if you have a poor GPS device like a phone which may only plot a position point every 3 seconds it opens up for errors and people will actually get a recorded distance which is less than the section length. You could see this when velo viewer had their alternative leader boards.
Strava should ban iPhones and the likes and insist on proper GPS devices which plot every second or quicker to make things more accurate.