Hey! It looks like Nate has spilled the beans that uploading run and swim workouts are on our roadmap, but we don’t have a timeline for rolling out this feature just yet. We’re working on improving our support for runs, but can’t yet share details as to what all that involves! 
In the meantime, please keep putting what features you’d like to see for run/swim workouts in this Feature Request thread. It will be a great resource for the team to comb through while building this feature!