Steepest Grades

I may have found the steepest grade in Calgary, Alberta, Canada at 27.2% its quite short, I remember as a High School student driving down that road and getting air time.
https://www.google.com/maps/dir/51.0539577,-114.0543408/51.0539542,-114.05607/@51.053529,-114.0549564,295m/data=!3m1!1e3
Correlate to Justins Trip Simulator is where I get the %

Here is another one @ 17%
https://www.google.com/maps/dir/51.0592135,-114.1056606/51.0623138,-114.1063371/@51.0604547,-114.1042687,791m/data=!3m1!1e3

Those are all too short.

This is the golden gem for me, 11% 3300W
https://www.google.com/maps/dir/51.0595191,-114.0947105/51.0638829,-114.0947606/@51.0597952,-114.0979188,1278m/data=!3m1!1e3

Another beast of a hill for me, until I get my MXUS 3K V2 going again, 3300W cont hill
https://www.google.com/maps/dir/50.88746,-113.9954423/50.8879077,-113.991878/@50.8886345,-114.0004071,1296m/data=!3m1!1e3!4m2!4m1!3e1

For more info, some old threads with steep hills/etc:
https://endless-sphere.com/forums/viewtopic.php?f=3&t=83735&hilit=steep%2A
https://endless-sphere.com/forums/viewtopic.php?f=3&t=12853&hilit=steep*
https://endless-sphere.com/forums/viewtopic.php?f=2&t=4074&hilit=steep*
https://endless-sphere.com/forums/viewtopic.php?f=4&t=637&hilit=+steepest+hills

how to check your hill grade
https://endless-sphere.com/forums/viewtopic.php?f=3&t=44975&hilit=steep*
https://endless-sphere.com/forums/viewtopic.php?f=2&t=41023&hilit=steep*
https://endless-sphere.com/forums/viewtopic.php?f=3&t=8034&hilit=grade

maybe more
https://endless-sphere.com/forums/search.php?keywords=steep*&terms=all&author=&sc=1&sf=titleonly&sk=t&sd=d&sr=topics&st=0&ch=300&t=0&submit=Search

There is a road near Golden New Mexico that is marked with a sign that says 18%. About a good half mile of that. That's the steepest highway in NM.
Streets or Driveways to houses and streets in the mountains might be much steeper.

Steepest thing I ever climbed with an e bike, I got stopped when the grade reached 20 degrees, which is about 36%. That was a jeep trail, not a road.

My favorite road in New Mexico has 10 miles of non stop 8%, with the last mile 10%. That kind of grade is more typical for paved highway.

There are free clinometer apps for your phone you can use to check the grade, road signs are often not very accurate and it can be fun to see how close your estimates are to reality.

It's rare to see steep grades in the US since many or most roads are relatively recent and engineered for cars and not holdovers from previous types of transportation. There's some crazy steep roads in Europe, 25-30% where you swear they just paved a hiking trail.

Any one watching the Tour DeFrance on TV at the moment ?
they have been racing ..pedal bikes remember...up 16% grades....and that after 200km of other hill sections !

Pedal Bikes what are those? :lol:

We have many steep streets in Montreal, where there are stairs on each side in lieu of sidewalks. The steepest that I have measured was 16.25 on the inclinometer. Yet I don't measure streets incline usually. There may be steeper short sections. The short street right behind my garage is useless in the winter until its completely melted with salt. There sure are some stop signs where one would not want to start with an ebike unless it is a mid drive or a powerful big hub.

When I was young, in the countryside, there was a hill where a car couldn't be left parked on dry pavement, for it would slowly skid down to the bottom.

British Columbia is quite mountainous, and lots of good hills abound! I measured this one near where I live. This is the steepest part, but the hill extends for over half a kilometer.

City streets can be crazy steep, like driveways, for usually short sections. Steepest I personally saw was in Bisbee AZ, where a lot of the sidewalks are stairs. Highway in the US is rarely above 10% grade, except for that terrible 20 feet at the switchbacks.

The tour is interesting this year, whatever team Sky and Chris Froome have been doping the last 4 years or so has gotten out, and now the race is more even with everybody cheating just as good. The route this year definitely seems steeper on some sections, lots of 16% grades this year.