Yeah, those MTB'ers never seem to turn the Garmin off when they're done. It's 2 hours of 7mph average, then suddenly they're doing 80mph. I subscribe to KOM Defender, and probably flag about 20 activities every Sunday evening when I get my "update" email. The KOM Defender algorithm goes through the segments I've crossed the previous week and marks the ones it considers suspicious-- like going uphill at 50mph with zero cadence and an HR of 65bpm. Usually it's MTB, every once in awhile it's crit guys after the weekly practice/race.

I mean, cropping a ride in Strava is really easy. Just cut off that last 20 minutes where the bike is in the bed of the truck, mountain bike people. Jeez.