He's happy to run around and I hate it. Sucks for motivation to workout

Train your dog to throw you a stick to fetch.

Interesting.  Just this morning I ran to the mailbox to mail some letters when I could have walked.  Granted being a harried parent who can use every second saved helps.

I actually 'borrow' a friend's dog, I walk quicker and further with a dog. They love being out and about, if you don't then try to find something that you do like doing. You are never going to exercise if it's a chore, it needs to be something that fits into your life and that you enjoy. I love walking and swimming, but some people prefer going to a gym or doing sports. It is slightly addictive too, once you find something you like.