I used to do this loop BPM, thx for the report
I haven’t done the loop in over 15 years. This story with the accompanying photos inspires me to return. In ’94 training for a Pac-Tour I did the loop 10 times in one summer which I felt was excellent training. I used an Avocet Vertech about three times to check the amount of climbing (I would calibrate the device by calling the PA airport for a barometer reading back in those antediluvian pre-Internet days).
What I got for a climbing total was between 7,800-7,900 feet. It recorded, if memory serves me, about 4,100 feet from the Park Victoria parking lot in Milpitas to the observatory which I felt was about right (I bypassed the climbing in Alum Rock Park). So going to the top of Hamilton was about half of the climb according to this device.
I see your GPS is stating over 10,000 feet climb. So naturally I wonder what’s correct. Sometimes I see GPS figures and they look inflated to me.