I have recently created two new segments to add a little competition to the Wednesday evening run for my running group. However, having created them, historical data has been pulled from as far back as 2016 and data from activities that have obviously been entered incorrectly e.g. a run that was actually a cycle. As an example, the leader of a segment I have recently created 'ran' at 1:45 mins/km which equates to 25 miles/hr.

Is there an option to create a completed new segment with no historical data? Is there an option to reduce how far back historical data is pulled from?