Good work Pete, but surely question 1 is, how much quicker could you have done it without racing 5k the day before! Maybe no quicker, as that 5k v 10 is almost to the second, the classic x2+1min I've made up as being some kind of good marker.
Scott, 1:16 with hills is impressive, Had to look at your po10 to see where that ranks, only to find that seems to be a big pb Are any performances missing from your record, or am I quite woefully mistaking you with Matt for something like a 1:11/1:12.
Will you seek out a real fast course to revise stuff?
The point is, a GPS is neither accurate OR prescise. At any one point in time it is estimating your location with an accuracy of less than 5m at best. For a long run this is fine, but for measuring 200m it is a long way out. This can be made at least replicable by using fixed reference points on your reps, but either way, recording the times to anything more than a second is meaningless.
take it as a sign against the other 200 seshs on the same pavement then!
I see people use garmins on tracks for mile reps and tempos and wonder how they can claim times too.
The mile should be an obvious one, even if you only think 4 laps = 1mile, that it doesn't even get you to the end of the 4th lap!
Tempos even sillier, and I reckon the garmin tends to show an average pace 10secs quicker than you're actually doing. So when people quote timed tempos on the track in a certain paces, I always wonder.
I can't see them adding up laps and doing the maths on time taken like anoraks like me do
Still, we can only time stuff as well as we can, that's basically what races are for!