https://wikifreedia.xyz/activity-nip/borrakkor@nostrplebs.com

WIP nip for activities on NOSTR. This is a nip designed to share different activities (running, biking, hiking, etc...) and generate summaries of these activities. 

Clients can handle managing just a users activities in a totally offline / private way. But you can also share the bits about your activity that are worth sharing. 

For example, you don't have to upload your whole activity file to your activity just to get a summary. You could generate all your stats locally, and then publish a trimmed GPX file for others to see without getting doxxed. 

If summary files are readily shared, then DVMs could generate summaries from those summaries. So without having to leak all your precise GPX files, you could still figure out activity streaks, or similar routes near you. 
DVMs could generate routes from partial GPX files. I feel like the possibilities are really endless here. 

Those who are data oriented can run their own models in Python and publish the results. Result sets could be standardized. 

There's a lot to be done, but I think it could be exciting.