Does Strava not look at just the start and end time to get the elapsed? I know Bryce's Suburb Run doesn't care if you've paused your Garmin on course; it just looks at the time you left the start and the time you arrived at the finish (and whether you went to all the CPs).
This example, well 34sec some people can punch it very quickly for very short periods on the bike.
unfortunately I think it is real as the Strava segment list is:
Etc so there can't be that many wankers out there, or maybe there are?
Even if it is legit, doesn't mean that they're not all wankers.