Hi gang
This must be about as local as it gets for me. I've done the marathon a couple of times. On the first loop you think "what was all this fuss about?" on the second you think "that hill has got steeper and longer", on the third you think "thank goodness I'm not doing the 50K".
The organisers are safety conscious. If it's properly icy they'll cancel. Otherwise, just dress appropriately for the conditions. Long sleeves for the runners, and for the supporters, truly, every damn layer that they can wear. Usually the sun comes out and it's passable as a warm calm day.
I think that I might even enter the marathon myself....