There’s one piece of information for an activity which isn’t displayed that could be very useful. That’s an identification of what city (or cities) the activity took part in. I’m imagining a list of cities (usually just one), and each city name is clickable to get to the city page.
As people travel (remember traveling?) they run in places they don’t normally run. Sometimes it’s not at all obvious where the heck they are. Being able to go to the activity to find out what city you’re getting credit for would be a useful thing. Even more so if they cross city boundaries, etc. You know what city your in-law lives in, but do you know where the city boundary is, or what the next city is?