Discussing this with Gran4z on another thread. My run shows an elevation gain of 2m. When I do a Map My Run of my "out and back" route - this is the 5k version, so the (flat) middle K is dropped for the 4k - it tells me the gain is a much more impressive 51m.
Anyone know what the Apple Watch actually measures?
Also, I have gone all this time thinking I had a flat course and I feel cheated! No wonder my runs are hard at the start - its all uphill. And you can see my dreaded Sirens Hill towards the end.