Questions, banter and general discussion.
I've ridden the OFRRCC Time Trial Race several times now, but can't figure out yesterday's results. Last week, I averaged 233 watts and finished in 20:50. This week, I averaged 241 watts and finished in 22:34! My weight is essentially the same (I was a tiny bit lighter this week), and it's a TT, so my pace is pretty steady. Same course and distance. Any ideas why my time so much slower?

Here are links to the races:

https://www.zwiftpower.com/events.php?zid=134263

https://www.zwiftpower.com/events.php?zid=121395
TTs are not simply a matter of average power but where you use that power. If you push harder uphill and less downhill you will be quicker over any given course than keeping a steady average
Sure, I get all that. But this was a largely flat course, and my efforts were really steady (average watts and normalized power were virtually the same in each case). And, oddly enough, when I import the latest ride into Golden Cheetah, it shows a time of 20:02, which is about what I'd expect relative to the earlier race. Watts, etc. all the same.

Thanks for taking the time to respond. I'm trying to be argumentative -- I'm just a little baffled.
mrbaldi wrote:
Sun Jan 20, 2019 12:03 pm
TTs are not simply a matter of average power but where you use that power. If you push harder uphill and less downhill you will be quicker over any given course than keeping a steady average
I’m assuming that your bike and wheel choice were the same? Reason is this can affect your times significantly.
I think the bike and wheels were chosen automatically by the race (TT bikes), but I don't know that for a fact. Interesting point to consider.