Originally Posted by
vtje
PM vs HR calorie estimate aside, Apple Watch is complete garbage at tracking speed/distance/hr. On the same ride/hike we usually have 25% distance difference between 2-3 apple watches. Getting a proper cycling computer (garmin or similar) with right sensors will give you immediate accuracy boost. Also if you use Strava, it does a reasonable job at estimating your Power numbers.
I don't have an outdoor PM, but I just got a Tacx Neo 2T which has a built in PM.
These are my numbers from my 20 mile, 1hr 15min ride yesterday:
AW Total Calories - 873 (workout + calories I would have burned if I didn't workout)
AW Active Calories - 743 (workout only)
PM Calories - 501 (I'm not sure who's algorithm this is... i.e. Zwift, Strava, or the Tacx?).
So yeah... quite a difference.
On the other hand, I've tested the AW HR against my Garmin HRM and they are pretty spot on. I've even tested it against a HRM at a gym and the AW is always the same as others.
