Originally Posted by
indyfabz
I still see it doing that at some bridge crossings. Tunnels too. You should see a map of the Hiawatha Trail. It’s got at least 12 tunnels. The elevation spikes show grades of over 20% in some places. No way to really tell how much I climbed using RWGPS.
RWGPS introduced a "Flatten Elevation" tool a couple-few years back to eliminate the up and down spikes from tunneled hills and gorges. It's a premium feature. I haven't used it(not a premium acct), but the functionality is pretty straight forward. They have a demo of it on their site somewhere.
https://ridewithgps.com/help/advance...tten-elevation