Tuesday Night Running Failure

My gamers were clearing out nicely by 22:00. Jason asked if I was planning to run at Clarke Field, and I said I was, so he said he'd walk over with me. Instead of departing at the field, he walked around it with me. Then again. And again. An hour and forty minutes later, I noticed what time it was and how long we had been at it. We went around a couple more times, then each headed to our own homes. So I got in two solid hours of walking and no running. I'm guessing it was probably about 10km, but I have no way of knowing for sure.