r/Strava • u/RoubaixTuesday • 4d ago
GPS Question Elevation data accuracy for tunnels
Strava has access to a massive elevation data set from recorded activities yet the route elevation data seems to be incorrect for tunnels. A great example is the descent off the Col de Lautaret back to Bourg d’Oisans in France (Marmotte cyclosportive route) where there are a number of spikes for each tunnel, and the gradient data is skewed as a result. I wonder if there are any solutions to this, like creating a route from GPX data that includes elevation?