<Nerdy>Easiest way is Rise/Run to estimate average slope (or grade). I tried to use gmaps pedometer, but the dataset points were too close for the algorithm.</nerdy>
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche
"We can judge the heart of a man by his treatment of animals." - Immanuel Kant
If I grasped Tom's simplified explanation and previous answers, then I would guesstimate the difference between the beginning elevation and the destination elevation, then divide by the distance traveled to reach the higher point (in same measure) and then multiply by 100, I have my percentage of the hill.
As experienced Saturday, the estimated hill height is 50 feet from the base, and the road surface traveled was .2 of a mile to reach the crest. Convert .2 of a mile to feet, .1 of 5280 = 528, so .2 = 1,056.
50 / 1056 = .0473 * 100 = 4.73 % incline.
A hill from back home I climbed almost daily on trusty Huffy (single speed), fun to go down, not fun to return home, was listed at 88 feet. The distance to climb is a quarter of mile, .25.
88 / 1320 = .0666 * 100 = 6.66 %
It has been cut down twice, the paper indicated 30 feet had been trimmed off the hill in the past 20 years for safety reasons.
58 / 1320 = .0439 * 100 = 4.39 % still a good work out.
The home I grew up on, (mom still resides there), is about half way up a hill as tall, but stepped, making it easier to travel.
This is interesting.
Of course if I am incorrect in my understanding of how explained please correct, it has been 37 years since trig course in school, and then likely did not understand theroy then , but now can apply then of interest.
Hill training goes like this:
First time, man this hill is a killer, I think I will die before I get to the top.
5th time, uh oh I better drop into low gear for this one.
10th time, I better gear down a little for this.
25th time, hill? what hill?
A little note of progress. There's a part of my normal neighborhood ride that is uphill. It's not very uphill, and you might not even notice it walking. But when I first started riding again, I would have to downshift to go up and would still be breathing hard when I topped the rise.
Well, a few days ago, I was out on my Worksman cruiser and came to that spot, and was feeling pretty good, so I had at it. I managed to hit 20 mph as I topped the little rise. It felt good.
"be careful this rando stuff is addictive and dan's the 'pusher'."
Keep doing it. You'll get better!
Just an update, according to my Garmin Edge 305... the overall grade is 3.5%, but towards the end the grade reaches 6% for about 0.15 miles. Thats the part that really kills me, but yesterday I managed to do it while keeping my speed over 5mph... however I was in the granny ring and the largest rear cog.