Originally Posted by Ygduf

Eh, I use the Garmin elevations, so everything I post is probably 10% high as well. Regardless, as long as you use the same measurements each time you will know how what you've done compares to your other rides.

(to be honest, the Garmin elevations at the tops/bottoms of climbs seem to be about right. I don't know if it's oversensitive on rollers, or adding cumulative ascent wackily)