I mostly commute and have never had trouble climbing a hill sometimes by using my lowest speeds (or close to them).
How do I evaluate even roughly what grave %age I climbed?
What I mean is that I would love to tour someday in a real mountain-y region, and would like to know how to approach climbs like this.
For example, I see profiles with %ages as high as 10%. I know I never rode 10km at 10% but how does 10% look like? how do I know I won't be forced to give up after the first mile or two?
How about 5%? 7%? or the extreme 12.5% I see on some climbs?
I do have a GPS device that gives a reliable path of where I've ridden, but the altitude is not reliable to the profiles of my rides are not either.