After worrying that the darkness would make me set foot in the gym it was actually the slippery ground that made me cross the dreaded threshold and use a treadmill.
I think I prefer running outside. I missed the cooling breeze and the treadmill is much more boring. The music in the gym was also much worse than Laura's. I'm also grateful to those on the forum who had warned that treadmills can affect your balance. As a result I didn't fall over when getting off which would have been embarrassing
On the upside I liked having the info on speed which will help me pace myself better and know how fast I need to be.
I will stay outside whenever I can but the gym is an ok option