We currently have 5 running hounds and 1 pup.
We have a bit of a routine that we use.
Weekend mornings belong to the dogs.
Almost all time is spent running dogs solo or in pairs.
We get up with the sun and have dogs on the ground right after.
We'll run each dog/pair for 2-3 hours both days.
The wife gets up and runs a different group than I do.
Maybe once a month we throw them all together on a cool or damp evening and let rip for 3 - 4 hours or till it gets dark.
Any time we get a nice cool down like the last few days here, it's the same thing, Grab 1 or 2 and run till dark.
The young developing dogs get the most time but all hounds get at least a good run or 2 a week.
Cutting back the feed so they don't get heavy and give them good steady work is about the best you can do.