Originally Posted by
Dunbar
I have a power meter and I find Strava's average power (and thus work/calorie burn) estimate pretty accurate. But this only works if you do an out/back route to account for wind. And obviously there's no way for Strava to know if you're drafting someone so keep that in mind for group rides.
I will go along with this and say, Strava does a pretty good job of estimating power over a large amount of time. For example, if I average my power curve over the previous month, Strava's estimate is pretty accurate to what I see when I take a month's worth of power data from my power meter.