It hit -9 on my ride this evening. I've got my clothing pretty much sorted for such temps, striking a balance between keeping warm but not so warm you sweat, which then freezes.... It's not often it goes down as low as this round here but I'm quite pleased I was in reasonable comfort, apart from my toes.
I had my Lake winter boots on (rated to -10!) a pair of wool mix ski socks over thin sealskinz socks. I also had gaiters on. I also have a pair of Columbia bugaboots which are size 12, have space for two pairs of thick socks and themselves are allegedly good down to -20. When I wore these on the Rovaniemi 150 it was -5 and I got very cold feet. On road I use Northwave arctic goretex boots with Planet X neoprene overshoes. These are fine down to about -1 or -2 for a couple of hours. I like them alot to point where I'm in the process of buying another pair to replace mine which are falling apart (cheers Andy!).
So am I just screwed in terms of keeping feet warm or am I missing something? I've tried various thicknesses of socks, made sure my feet aren't pinched and stay dry. Any tips appreciated plus share your cold weather riding gear wisdom.