Split google maps route in few equal segments

Split google maps route in few equal segments

I'm trying to find a way to split google distance route in few segments
and get points of it. Main idea is to get places(from google places
service) in between two points. But not for all route, just for few points
in between.
I was thinking about RouteBoxer (Link), but it might be cases, when "box"
is very large.
maybe you have any ideas how, after summing route distance, get point in
route after some distance? Let say, I have a route that is 1000km in
total. And then how to get point on the route in 200km? 500km? 700km? It
would be perfect for me. Thanks in advance.