Maybe I don't want to do a spring marathon badly enough to train on long solo runs through the depths of winter.
I'm generally not a happy camper after ten miles anyway. My 50-year-old feet and knees hurt. Not just uncomfortable, mind you, they are PAINFUL.
I'm tired of NEEDING construction site porta-potties or sections of quiet woods from frequent digestive upsets on long runs. Even when pre-emptive Imodium is in place. That gets real old.
This is what happened to my planned 14-to-16 mile run today:
Yeah, that included some extended stops (see above) and turned into trudging back to the car before Mile 7.
I like half marathons. It's a nice distance. A friendly distance.