Garmin have a great website, full of nice visualisations of activity and a mobile app where you can view tracked activity data.
That's great, right up to the point you want to compare two activities, here it falls down. Other than seeing high level stats side by side, you cant.The solution
Build my own analytics tool to allow me to compare not only statistical data, speed, stroke rate, distance, etc.. but look at the actual GPS trace of the route.
Using a 'free' desktop version of the platform we have adopted to form the front end to our Insights platform, Qlik Sense and activity data downloaded from Garmin Connect I wanted to see how I could visualise the data and build something which gave me what I wanted.