I know that I can ignore it... or, if I'm feeling squirrley, go and manually delete them by export and edit in a text editor... but if I know the GPS data is BS because, for example, I'm on an indoor track and the sattalites can't get an accurate track, so its showing a several hundred foot elevation change when I'm on a flat circular track or isn't tracking half my run anyway, I should just be able to delete the GPS data. I think there is a way to stop GPS tracking when I'm on an indoor track (and I'm going to look when I finish here... just got the device and I'm still figuring it out), but for those times when I forget or with my previous runs, I should have that option.
Thanks.