26 or 29 and type to buy?

Thanks Jim. I learned on a 24" too. Was way too big for me at the time, but what I had.
I was wondering what a typical uni cadence was. I did the same calcs using a 90RPM cadence. And converted it to “x” minutes/mile for the dog for each size wheel. The 36" was out of her comfort range for a longer ride/run.

She is well trained so will go whatever slower speed i go, but seems to like the trails in the woods behind us best. She knows she can do what she wants there (until I call her) and I go slow enough she gets “squirrel chasing”, “a fast swim” in the creek or ponds, etc in too.

Jim,

Just looked at your age and pic…very inspiring to us over 60 beginner (again) guys!!!