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How can I see in one place the activities I've done in total this year? Is it possible?
I've tried googling, but don't seem to be able to view what I'm after
VeloViewer 😉
In the app: Profile > Statistics > Year-to-date section
https://www.strava.com/athlete/calendar will give you a broad overview of your monthly activities this year, or previous years with a click of the left arrow button up the top left (sometimes throws a wobbly error for me, so I click right back to this year then quickly left click twice).
VeloViewer
Will give that a go, cheers
Statistics > Year-to-date section
See this is the bit I can't find - just gives separate months

Cheers
Try the web page rather than the app, its under your profile, last 4 weeks, best efforts and year to date.
If you're just looking for your total distance and elevation, then in the Strava Android app, go into your profile, scroll down and it's in the 'statistics' bit. Apple app may be different?
On that page you posted, tap the picture of your face at the top. That'll bring up your profile. Then scroll down and tap Stats.
In the app, click profile, then click your profile pic. Scroll down. Its there
just had a look at my year to date.
nearly 500 mile down on previous years.
need a couple of good tours before end of year to remedy things.
If you are really interested in your Strava stats then +1 for Veloviewer.