02-09-2016, 02:01 PM
Join Date: Oct 2012
Mentioned: 6 Post(s)
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I don't think there's a perfect answer. It all depends on the breed(s) and the individual dog.
At 9 months my dog (70lb lab/mastiff mix) was more than happy to do a 10k run. She was eager to keep going even after we had stopped. We were always worrying about pushing her too far so we just let her set the pace and watched for any signs of her slowing or getting too tired. Also, be sure to bring lots of water (even if it's cold out).
Dogo's are wildly athletic dogs - given what they were bred for, I bet they can go that distance more easily, comfortably and earlier than most dogs.