Map Pedometer - How far did you go?

Thanks, that helps!

On my route there are missing stairs that takes one from one street to another which involves considerable elevation change. When I attempted to plot my points as soon as I got onto the sidewalk to stairs point the map automatically took me back to the driveable street. The location of the stairs is...

Is there any way to make a correction, as in, I overshot an intersection and wish to change what is on the map. Thanks! I really appreciate this map pedometer since I've started walking. I used to track my walks using the regular google maps and so glad I found the map pedometer as it is so much eas...