Discussion: Slower than the mapper....

....who still claims to be (recovering from) injury. Quite a bit faster than the planner :-)

I also think you should have a time addition for not having the "waiting around for the phone to beep" :-)

aka "the rest period between intervals"...

I think you should be more concerned with your track being around 500m longer than everyone else's!

Concerned? I'm delighted, it clearly means I was running like the wind :-)
There is no obvious GPS daftness, and my routes weren't that bad, so I suspect it has taken the distance from when I started the app, rather than from the start of the course.