unexpected 15

I went out for a run and was feeling overall pretty good. After I began I knew I would get in a longer run than typical Motzash run, question being how much longer. Pace was slowish, but I felt good, so i just kept going. At some point I figured I could try to make up for a my lousy run on Friday that i cut extremely short, so I just kept going. I ended up running a 15km run, which is good for the long pullback run i had planned for Friday. I felt like I could have kept running but saw no reason to push it.