Word of caution when thinking about jogging with your large breed. there are certain breeds not built for jogging. Rotts are one of those breeds. i would discourage running long distances with your Rott. Consult your vey.
when Lady was having surgory for her first ACL, the vet told us that part of her lifelong plan should not include jogging. And i quote "Rotts were not bult for running" he went on to say that it makes him mad to see someone jogging with a breed like a Rott.
Maybe it's just one opinion, but with the predisposition for Rotts to tear ligaments and ACL's (a highly expensive fix) just because of the way they stand/lunge unlike most breeds, i would be leary of having Loki be your jogging partner. call the hound down the street to jog with.