Level 6 Valued Member
@pet' - Usually between 100 yards and 400 yards, depending on energy level on that particular day.
I'd typically take between 20 and 33 steps per leg, and call that a "set," and rest between 60-90s per set.
Once I got back into regular KB and BB training I kept doing them.
I noticed there's a "tipping point" for lack of a better term:
They only help your maximum strength so much. Then you need to actually work on your maximum strength and use these as "recovery" for max strength days. The max strength days then feed the crawling, making it feel easier, so you can load it even more.
This may or may not be obvious, but I thought I'd bring it up.
Finally, I think there is a point of diminishing returns. I crawled near daily - 6 out of 7 days a week for about 7 years. I'm done now. That was enough.
Hope this helps.