delete impossible times in segments leaderboards

Same for cycling, over 100mph? Really?

I ran quite a few world records on short segments when the GPS errors at both segment ends were in my favor. Time for Strava to require a minimum segment length to weed out pollution by the inevitable inaccuracy of consumer-grade GPS devices.

Really frustrating when good local segments are nabbed by cyclists who put wrong activity type a start. This would be auto detection from data and easy for runners to flag up for removal to open up segment to legitimate athletes.

You don't mean auto flagging that already exists to some small degree but marking activities as suspicious so that others can recognize them quicker?

I just noticed one person with an activity of over one thousand hours on top of a leaderboard. Seriously? There are challenges where you should aim for certain time exercised over the course of a month, like in this case January Fresh Start where you’d get the badge by completing 30 hours. January has 31 days, meaning 744 hours. Therefore, it should not even be possible to log more than 744 hours in a month - or if you have overlapping exercises, you should not be able to get double time counted towards challenges - not to mention that even then it is not realistic to exercise 744 hours. Why on earth this was not automatically flagged and removed feels odd to say the least.