Running distance over time. I still can't run 5k without walking about 20% of the way.
And it's not going fast either, but I'm still proud of the progress. The data is keeping me going.
EDIT: Thanks for the support! The legs still don't want to do, what I want them to. But they will learn, who's the boss eventually.
Don't let anyone gatekeep you about run-walking. It's a perfectly valid strategy/method for running.
Also if your knees are hurting you can try running on a softer surface. That's how I got into trail running.
If your knees are hurting, your running technique is likely wrong. I know a lot of people start off running heel to toe, which is backwards and puts a ton of stress on your knees.
For those who don't know, you're supposed to land on the ball of your foot, which basically turns your lower legs into a shock absorber for your knees.
Trail running is great. Knees won't hurt and it's not so damn boring as doing laps around the block or something
I'm at this point now where I need to mix it up because running laps around the block has gotten super boring.