Google Maps - Elevation and Slope of a route

[markz]

I was trying to figure out my elevation gain on a 2km stretch of road.
I knew in Google Maps you could do it with vehicle routing on roadways, but I just did it with Bicycle, going through parks and bike paths, not just the road.
Click on "Directions" in the upper left.
Type in Starting Point and Ending Point.
To move, move starting point anywhere.
To move the ending point right click - remove destination. Right click anywhere on map, directions to here.

My route 2.6km I go up 43m, so rise/run = 37/1300=0.028, so 2.8% grade. So I can only assume thats averaged over the entire length of 2.6km.
I shortened my distance to areas where I knew it was steeper, then other flatter areas. At most its 8/150=5.3% grade.
My little 250W ebike could get up about 1/2 of that stretch, with a good run at it, and some pedalling with the pedal assist sensor.

I then moved to a park valley setting where I knew there was a steep steep hill. 7% was the slope there.

There was a website I stumbled upon yesterday, where I was searching out slopes of different bike paths and roads in my city.
The guy had a GPS unit on his bike so he listed 3 pages of routes and their slope. However like I meantioned earlier, some areas are steeper then others so an averaged slope is really meaningless. So I figured out on google maps how to isolate an area on a map and with a calculator, figure out the slope. Rise divided by Run = a decimal number, times that decimal number by 100 and you get a percentage slope.

 

[nutnspecial]

I lazily sped-read this, but have you tried mapmyride or gmap-pedometer?
They are what I use for elevation anywhere on the map, but I don't think they add it up for ya.

 

[markz]

This is just another option.
Maybe for pre-planning a course or whatever to see what slopes are.

For me, I just like using Google Maps, using their "Street View" option, being able to stick flags or weigh points on the map with a description.
Looking at different pictures people took. There used to be a elevation map, with elevation lines, I dont see it on the updated version.
I lost my password for Google Maps which is now apart of Google+, so I havent been able to log in for a few years. Then I decided I will figure it out no matter what because I had a lot of personal maps on there. About a 100 tries and 10 days figuring out my password I figured it out.

I like that they added a guy walking pathways and trails with the google camera so its like the street view.

 

[dogman dan]

In any case, you are on the right track to shorten the route when you want accurate grades on a hill. With map my ride, mapping a hill 3-4 miles long might say the hill is 6%. Mapping half mile sections can reveal that a short bit of it is 10%. Big difference if you need to know what the max grade of that steep bit is.