I’ve plotted a route around Ladybower reservoir using Bike Route Toaster but the elevation graph shows the route is flat.

Any ideas what I’ve done wrong? Is there a button I’m supposed to press for it to calculate the elevation?

FYI here is the route I’ve plotted:

http://bikeroutetoaster.com/BRTWebUI/Course/840149

The start bit goes over the water, you should fix it so that the route sticks to ridable areas only (bikemap was also showing 0hm difference before I fixed the course; the altitude profile was correct, though)
http://www.bikemap.net/en/route/3315810-testtest/

thanks, I tried sorting the route but the elevation profile was still flat in Bike Route Toaster.

Has a quick look at bikemap.net and seems to do everything bike route toaster does so might switch to that instead.