Rider pees as soon as he hits the grass. You can tell because the entire area right off our cement deck is dead. He will normally go poop right after that, then come back to the house within three minutes.
Harlow pees within ten steps of the cement slab, and poops (but takes forever to find a spot) right after. Then back to the house for her (if she hasn't had breakfast or dinner, she sprints back. :rofl1
No more than 5 minutes for her. If she is taking longer than normal, I tell her to hurry it up and then she will go.
Lucy is terrible about pooping. She doesn't like to go in the morning, so most of the time, she just pees and then has to hold it until I get home from work. So, she's pretty quick in the AM.